What is your favorite movie genre? I like most of them: SF, Drama, Thriller... The only thing is that I can't find some good comedy movies...the last one I watched was Super Troopers.
My favorite movie genre - by far - is "plot-twist" movies. I like to learn at the end that my mind has been fooled, or try to pick up on all the small hints that are typically there in any good plot-twist movie. I particularly like the genre for its "re-watchability". As soon as the movie is over and you know about the plot-twist, you just HAVE to go back and watch the whole thing again, as it will be a completely different experience on second watch-through.