I think it would be AWESOME if they did. Maybe Toy Story 3 will be in IMAX! Or Cars 2!
What would be really cool,
Is if they threw Up into IMAX,
Just with 3-D also. ;]
Hey yeah, and welcome to Pixar Planet!
Poor choice of words. 
Yeah.
Haha.
I noticed what i said after i posted it. =)
That would be awesome! I personally think that Imax 3d is the best of the best to show a film
It would be great, yeah. But Pixar is not doing IMAX, at least until 2011, I don’t know if ever. The question of IMAX has been brought up with JL before, and he used the same old “if necessary” answer.
IMO, IMAX (the real IMAX theater) is better than normal 3D screen, 3D IMAX is the best thing ever, and Pixar should release their future films in IMAX format. Think about the money lost to DreamWorks in this format. 
Disney has deal with IMAX (Christmas Carol, Alice in Wonderland) but sadly not Pixar films.
Cars would be neat to see in IMAX because of the race sequences. The Incredibles would also be really cool in IMAX cuz of all the action sequences. Although I cant get to my IMAX theater that much. And since it’s attached to our science museum, it gets mainly devoted to science films.
Cars 2 would be GREAT in IMAX.
EDIT:Toy Story 3 is gonna be in IMAX 3D! Oh boy!