Hitchhiker's Guide to the Galaxy
I read a review before I went to the movie that said "Great acting, great effects, no discernable plot."
I thought that sounded perfect, and it pretty much was. Except for one part that I felt Zaphod's third arm could have been done better, the effects were great. I loved the design of dang near everything. I think they hit all the high points of the book and really captured the spirit of it.
The only thing I felt that this changed at all was that in the books, I loved Zaphod, but in the movie he kinda grated on me. But you know, that's the type of character that would be like that.
The only thing that got left out that should have made it: Mostly Harmless. And Gin and Tonics.
Otherwise, I think it was an amazing recreation of a great book. To say thumbs up would be too cheesy though.