Carry definitely has good options too, The Eternal Sunshine of the Spotless Mind, and I don't think he went all funny guy in The Number 23, I recall I enjoyed it but very litte else about it.
Edit: Oh of course Truman Show but that goes without saying.
When Leeto got bored of the Duncans and didn't use his prescience. Don't mind me been listening to the Dune series for the umpteenth time again. Just the core ones of course.