I just watched "The Hangover" for about the sixth time last night, and while I knew everything that was going to happen, every line that was coming (and quoted along with the movie at times), I still find myself laughing just as hard at this movie as I did the day I saw it in theatre. Overall, a top notch comedy, very well done, awesome cast. I love Zach Galifianakis. I think, without him, the movie wouldn't have been as awesome as it is, because Zach does a fantastic job with his role as an awkward weirdo who just doesn't care what people think about him.
Such a great film, definitely one to watch over and over again, and one of my favourite comedies, for sure. I love the inclusion of Jeffrey Tambor and Ken Jeong. Heather Graham, I could have done without, but she's really the only thing I don't completely enjoy about this movie. The writing was excellent, the delivery of the lines fantastic, and I will never get tired of seeing this one, time and time again.