If you are going to base a film on a classic novel, please at least borrow some of the plot and not just a few character names and the concept of "guy on Mars." And please don't throw a bunch of CGI on screen and hope it makes a cool film--we already have Michael Bay for that. Thank you.
And Andrew Stanton, did you really direct Finding Nemo and Wall-E before directing this? Because, just between you and I, you're supposed to direct your lousy movies first and then get better, not do the reverse.
Three final words: READ THE BOOK!!!!!