I'm a huge fan of The Simpsons and can't wait for the film to come out in July this year. They've just released trailer 3 and are going to release trailer 4 in May, which will indicate what the film will be about - although they are currently reporting that they don't quite know yet what the film will be about themselves :)
I'm glad they're not doing it 3D, that's what I love about The Simpsons, it's quality 2D animation, old style and I love watching old and new episodes and seeing the changes over the years, much better than the roving stomach on Shrek that's for sure.
I hope this film can show DreamWorks and alike that it's all about the story telling and not about the latest technology and effects. Anyway, here's the trailers so far: