That Gloucester v Leicester game really was something to watch. I really thought that Leicester were going to pull it off and down through the years, more often than not, they find a way to get the score to win in these situations.
Atmosphere was fantastic, been in a few crowds like that at Leinster games and it's so amazing to be in the middle of them. Been in similar crowds at 6Ns games too. Some of the RC crowds this year have been completely flat though.
In smaller grounds you're more likely to get crowds like that because the crowd is made up of the most passionate supporters who will cheer and sing to drive their team on. In larger grounds there is more room for the kind of fans who wait for their team to give them something to cheer about.