Connacht and Cardiff Blues also showed there are no easy matches in the RaboDirect PRO12 with impressive wins over the Ospreys and Edinburgh respectively while the Scarlets completed the double over Munster.
Here we review all the weekend's best action.
TRY OF THE WEEKEND
There was a hatful of tries to pick at the weekend - Glasgow ran in eight against the Dragons - while Dominic Ryan helped himself to a hat-trick as Leinster cemented themselves in third spot.
But it is Ryan's teammate Sean Cronin who scored the stand-out try. Hooker Cronin showed he was in the mood with a typically forceful run for his first score but it was his second which caught the eye.
When Leinster are on song they are a joy to watch and Cronin finished off a fine sweeping team move, brought about by a storming run from centre Andrew Goodman to ensure our try of the weekend was scored by a front row for the second week running.
BREAK OF THE WEEKEND
While Glasgow Warriors were particularly impressive in their 60-3 victory, the Dragons' defence left plenty to be desired with gaping holes picked off at will by the Scots.
Try number four was particularly impressive however, thanks to Taylor Paris' fleetness of foot.
The 20-year-old Canadian had barely been on the pitch a minute but when he picked up the ball and danced his way through the Dragons defence, demonstrating why he is Canada's youngest ever player and why he was included in their World Cup squad, aged just 18.
Stuart Hogg and Sean Maitland are away on international duty but Canadian pair DTH van der Merwe and Paris are proving more than adequate replacements.
PLAY OF THE WEEKEND
When the Scarlets last did the double over Munster, fly-half Owen Williams was a week shy of his 12th birthday. Nine years on and he put the Irish province to the sword to end that wait, outshining Ronan O'Gara - he of 127 Ireland caps - in the process.
While O'Gara was wayward from the tee, Williams was spot on, notching five penalties to put his side 15-3 to the good.
But it was the 20-year-old's 63rd-minute drop goal - reminiscent of his Irish counterpart - to give the Scarlets an unassailable lead which goes down as the play of the weekend.
An 80th-minute yellow card was the one blot on his copybook but after winning a second successive RaboDirect PRO12 man-of-the-match award in just his second start, he can be forgiven that.
PLAYER OF THE WEEKEND
Williams can count himself unlucky not to pick this up as well, as can Ryan after his excellent hat-trick - showing great control at the back of a rolling maul which Treviso just couldn't handle.
But on the day Gordon D'Arcy was ruled out for the rest of the Six Nations, Irish centre Darren Cave gets the nod.
He set up two of Ulster's tries - both of which were finished off by the supporting Robbie Diack - with fine offloads, the first of which back inside was particularly memorable.
LIONS WATCH
The performances of Luke Fitzgerald at full-back for Leinster and Andrew Trimble on the wing for Ulster will not have gone unnoticed, especially with the injury problems Ireland have at the moment.
Cronin, meanwhile, could have done little more to stake his claim, the only problem being the form of Rory Best ahead of him.
Iain Henderson also impressed in his man-of-the-match performance for Ulster while John Barclay, the only one of Scotland's Killer Bs missing from Scott Johnson's set-up also looked good in the Warriors' romp over the Dragons.
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