I saw a movie were this guy was in love with a blond cartoon chick. Then he dies somewere in the end and he turns into a cartoon. Their notr really cartoons but like a animation of themselves kind of like jessica rabbbit style

Gotcha covered here, my friend!
This is one of my ABSOLUTE favorite movies, and it's called "Cool World" with Brad Pitt and Kim Basinger. It's about a guy who gets pulled into a cartoon world that he created from images in his dreams. He gets pulled into the Cool World, which is a cartoon world, by Holli Wood--voiced by Kim Basinger, and later played by her when she turns from cartoon to human. VERY awesome movie!

I believe that Missa8324 is correct with the title of the movie, although I disagree as to its awesomeness. I want my $5 back! (Ticket prices were lower back in the day.)

Yup cool world it is the hottest cartoon chick ever