Scott Gibbs, 1999 (Swansea RFC/ Ospreys)
Undefeated England travelled to Wembley for an 'away' game against Wales with the last ever Five Nations title on the line. Neil Jenkins had struck six penalties and a conversion, but England led 31-25 with three minutes remaining, the result apparently secure. Scott Gibbs had other plans.
The 1997 Test Lion and so-called 'fastest prop in the world' took a flat ball, burst past Tim Rodber, around Neil Back and Matt Perry before leaving Steve Hanley flat in his tracks. Jenkins struck his eighth kick of the afternoon and handed the title to Scotland.
Duncan Hodge, 2000 (Edinburgh)
Before the dawn of 'Super Saturday', a winless Scotland - defeated by Italy in their first ever Six Nations match - welcomed the Grand Slam-chasing English to Murrayfield. Scotland were reigning Five Nations champions, but had performed well below their level.
Sir Ian McGeechan's side, as they so often did, raised their game for England's arrival and in particular, Edinburgh's Duncan Hodge took the game by the horns. As the rain poured in Edinburgh, Hodge and half-back partner Andy Nicol controlled proceedings, and the stand-off racked up all 19 of Scotland's points with four penalties, one conversion and a try for a 19-13 win.
Stephen Jones, 2005 (Scarlets)
Jones, a Celtic League champion with Scarlets in 2004, was pivotal throughout Wales' first Grand Slam in 27 years.
Though their 32-20 final day victory over Ireland was comfortable in the end, the Scarlet was unflappable as he nudged 16 points under intense pressure to restore this proud rugby nation to European rugby's top table. He also turned up in defence at one point holding up Girvan Dempsey to deny Ireland a critical score.
Gethin Jenkins, 2005 (Cardiff Blues/Pontypridd/Celtic Warriors)
Jenkins too was critical on that day. With the game poised at 3-3, Ronan O'Gara took a split second too long to deal with a clearance kick and like lightning the loosehead Jenkins' excellent line speed earned him a charge down.
Few will forget the image of Jenkins' surprisingly nifty footwork as he dribbled the ball to the line and earned Wales a seven-point advantage they would not relinquish.
Andrea Marcato, 2008 (Benetton Treviso)
Italy were without a win when Scotland arrived at the Stadio Flaminio in 2008 and it looked as though the game was heading for a draw when Chris Paterson levelled proceedings with eight minutes to go. Ally Hogg and Mike Blair scored for the visitors, but Sergio Parisse and Marcato fought back for Italy.
Marcato was solid all afternoon, kicking two penalties and two conversions. But it was with the last kick of the game that the former Treviso man's key intervention came, dropping a goal to clinch victory and a first Six Nations win of 2008.
Shane Williams, 2008 (Ospreys)
Wales struggled in the 2007 World Cup, dropping out at the group stages after losing 38-34 to Fiji, but in came Warren Gatland and a team packed with GUINNESS PRO12 stars became Grand Slam champions.
Shane Williams - a four times Celtic League champion with the Ospreys - was at his inspired best throughout the 2008 championship. With Wales hunting their second Grand Slam in four years, Williams seized on a spilt Yannick Jauzion pass in Cardiff and hacked through for his sixth try of the Championship.
Martyn Williams, 2008 (Cardiff Blues)
Openside Williams was a critical part in both 2005 and 2008's successes - his double in Wales' 2005 comeback win against France is unforgettable - and the Cardiff Blue struck France again on the final day of 2008.
His 77th-minute try put Wales into an unassailable 29-12 lead and clinched Wales' tenth Grand Slam 100 years after their first.
Brian O'Driscoll, 2009 (Leinster)
O'Driscoll's Six Nations highlights run and run, but his finest hour as captain of Ireland came as the men in green battled to a 17-15 win over Wales in Cardiff. Famed for his scything breaks, it was close to a ruck that the Leinsterman and four-time PRO12 champion, had made his most telling contribution.
Wales led 6-0 at half-time and with the Irish forwards pummelling Wales' line at the start of the second half, it was the captain who belied his slight frame to power over from close range and go a long way to Ireland's first Grand Slam in 61 years.
Dan Parks, 2010 (Glasgow Warriors/Cardiff Blues/Connacht)
The GUINNESS PRO12 all-time points scorer, Parks was at his prolific best against reigning champions Ireland in 2010. Scotland went to Croke Park without a win and staring a Wooden Spoon in the face. Scotland lost 16-12 in Rome and had managed a 15-15 draw with England at Murrayfield where Parks kicked all of Scotland's points.
The Australian-born pivot was on song with the boot again as he slotted five penalties and a drop goal. With two minutes remaining he capped a remarkable performance, calmly pushing over a place kick from the touch line to hand Scotland the 23-20 win.
Leigh Halfpenny, 2012 (Cardiff Blues)
After a hugely positive World Cup, Wales went into the 2012 Six Nations as firm favourites and did not disappoint. His 66 points made him top points scorer for the Championship, but it was his 11 here that were especially vital.
France had been underwhelming but were revitalised against the Welsh, while Gatland's side had to deal with the then unusual pressures of being favourites. Halfpenny though, was his usual consistent self, converting Alex Cuthbert's try and three penalties to give Wales their third Grand Slam in eight years.
Kris Burton, 2012 (Benetton Treviso)
Italy named what was at the time the most capped international pack in history but the key to this win was Treviso's Burton turning that dominance into points.
It was his 76th minute drop goal that sealed the 13-6 win at the Stadio Flaminio to add to an earlier penalty, while Giovanbattista Venditti, the then Aironi winger scored the only try of the game. In Jacques Brunel's first season in charge, this win helped the Italians avoid bottom spot in the Championship.
Alex Cuthbert, 2013 (Cardiff Blues)
It is hard to single anyone out from the most one-sided battle between England and Wales in recent memory. Wales outmuscled and outthought Stuart Lancaster's Grand Slam chasing side for 80 minutes in a 30-3 thrashing. Wales were exceptional to a man, but it was Cardiff Blue Cuthbert's two tries which really broke England's resistance.
Cuthbert's first came on the counter as the giant wing outstripped Mike Brown to score in the corner and increased Wales' lead to 17-3. Only minutes later he scored again, as Osprey Justin Tipuric fed the rampaging back to dive over and put the final nail in England's coffin.
Jonathan Sexton, 2014 (Leinster)
It was Brian O'Driscoll's Six Nations swansong, but Leinster teammate Sexton stole the show. Ireland's last win in Paris had been in 2000 after O'Driscoll's hat-trick, but here Sexton kicked two conversions, two penalties and scored two tries for the men in green in a performance marred only by missing two relatively easy kicks.
Indeed Jean-Marc Doussain almost kicked France to victory, but Ireland held out and thanks to Sexton, gave O'Driscoll a fine parting gift.
Paul O'Connell, 2015 (Munster)
The Great Munsterman O'Connell won two GUINNESS PRO12 crowns and three Six Nations titles and though he was often the outstanding forward on the pitch, he intervened in an unlikely fashion against the Scots in 2015.
With England, Wales and Ireland all gunning for the crown on a spectacular final day that saw 221 points and 27 tries. Joe Schmidt's men needed to win and win well at Murrayfield and O'Connell, with the bit firmly between his teeth, dived over after just four minutes to set the wheels in motion for a 40-10 triumph and a second title in two years in what would be his last Six Nations game. His performances over the course of the Championship earned him Player of the Tournament honours.
Sean O'Brien, 2015 (Leinster)
Leinster's Sean O'Brien followed his captain's lead in Edinburgh. He carried the ball with destructive vigour and scored two tries on his way to being named Man of the Match.
His ten-point contribution was enough to swing the championship in Ireland's favour and allowed Ireland to retain their crown for the first time in 66 years.
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