Used all six votes on this group as well.
Back to the Future was my favorite of the group, and I believe this is rightly labeled a comedy. A Christmas Story and Monty Python, as well as Young Frankenstein were also no-brainers for me.
Also voted for Dirty Rotten Scoundrels (Though not as good as Planes, Trains and Automobiles which I've always thought of together for some reason) and 40 year-old virgin.
P.S. I think I fell asleep during Analyze This.