[SmellyGeekBoy]

Pixar have always developed and used their own in-house animation tools, it's a big part of their culture. I seriously doubt they'd be using Maya (or anything else) regardless of how advanced it was.

[Chazprime]

Maya is indeed used at Pixar, as is just about every other package out there. Their pipeline is set up to allow work to be done in a variety of tools.

[santaclaus]

Maya is still used in Pixar’s characters department for modeling, I believe, and maybe a few shading-related (UV layout?) tasks here or there.

[Chazprime]

You'll find it anywhere someone wants to use it. Some effects people still love doing quick simulations with nCloth, for example.

[santaclaus]

Very cool! Glad to see Nucleus still getting some love, Jos would be happy — I was talking to a Pixar effects fellow at SIGGRAPH and was under the impression that Houdini’s constraint solver thing had spread like wildfire in that department.