How, may I ask, did Finding Nemo suck?
Okay, maybe suck is too strong a word. But there Belleville is far more original than Nemo. Yes, Nemo is watchable, but for me it was nothing more than a way to kill a couple of hours, I didn't find it particularly enjoyable. Look at other pixar pictures - Toy Story, Monsters Inc - they were more fresh than Nemo - frankly, I feel the formula has worn thin. Also, I don't really feel that Nemo is that more advanced that its predecessors in computer-animated films that it deserved to be recognised on technical merit either.
Basically, I didn't rate it at all. The only reason it is so persistently recognised is because it's Disney/Pixar. Try something different for a change. Hope Belleville wins over it in the Oscars.