This movie is sooooo silly! I saw it in the movies, and I recently saw it again on DVD. Definitely not the best of Guest's movies, but i l still love it!
Here's the trailer
However, I'm not recommending this movie to anyone that doesn't like Christopher Guest and his type of humor, my sisters hated me for bringing them to the movie and demanded that I give them their $10 and 1:30 minutes back...(took them out for margaritas afterwards)
Yes, I agree, O'Hara is the best part of the movie and any movie that has Parker Posey is great! (Even Adam and Steve, lol...)