Goofy comedies are among my favorite movies (especially Monty Python). I'm very fond of Science Fiction and Fantasy as well. And, of course, I also like anything with extraordinary special effects and/or computer graphics — partly because of my occupation, and partly because I used to make cheesy claymation films when I was in junior high and high school. Check out my Top Ten Favorite Movies.
For any info you need on movies, you can look it up on the Internet Movie Database. This is one of the first sites I ever surfed 9 years ago and I've been using it regularly ever since. For great buys on DVDs, go to Deep Discount DVD, another site I've found to be invaluable the last couple of years.