sorry for this post in advance as it is quite long but the quotes are so funny
i thought the first hangover was excellent. It was really funny and i think Zach Galifianakis character is gold especially with statements like this one in the hotel Caesar's Palace
Alan Garner: Can I ask you another question?
Lisa: Sure.
Alan Garner: You probably get this a lot. This isn't the real Caesar's Palace is it?
Lisa: What do you mean?
Alan Garner: Did, umm... did Caesar live here?
Lisa: No.
Alan Garner: I didn't think so
or this one
Drivin' drunk. Classic!
Alan Garner: [while getting fitted for a tux] Woah watch it pervert!
Doug Billings: Relax Alan, he's just measuring your inseam.
Alan Garner: Well he's getting close to my shaft
Old Timer at Gas Station: [commenting on the Mercedes as Alan is pumping the gas] This is a sweet ride you got here.
Alan Garner: Don't touch it. Don't even look at it. Don't look at me either.
[the old man walks away]
Alan Garner: That's right. You better walk on. I'll hit an old man in public
Alan Garner: Hey, Phil, look.
[laughs hysterically while miming the baby masturbating]
Alan Garner: He's jackin' his little weenis.
Phil Wenneck: Pull yourself together, bro.
Alan Garner: [stops the baby] Not at the table, Carlo
the film is one of the funniest ive seen in a while IMO and there are more quotes here
http://www.imdb.com/title/tt1119646/quotes
plus Ken Jeong is really funny in it