Hmm, Star ward ROTS is probabely made in Max 6 or 7, some large scale tarrins are made in Maya, (take a look at the credits in the end of movie, I saw it today)
Linux doesn't dominates the Movie industry, Mac OS X & Then Windows XP does, also workstation running SGI stuff etc, but they are big ones, dam pro
3Ds Max is more popular in gaming , while Maya in Movies, Brayse & Vue for landscapes both for games & movies specially Large sacle, making models in Max is more easier then Maya
Revenge of the Sith & clone wars was made half on computers & half with blue screen, so there was real life making, these days, much of the animation is made via chroma keying, SIN city is made 95% with blue screen & then in Computers