On the rare occasions that I was put at the controls in my college years, I would play about 3 U2 songs, 2 of these back to back. No more because as others have said, they're not known for dance music, and more importantly, I just don't want to start a war with anyone who makes a negative comment.
I remember doing Vertigo and Mysterious Ways(both studio) back to back once and it got a pretty damn good reaction. I was very surprised.
Others I remember giving a spin:
Do You Feel Loved
Holy Joe
I Will Follow(Milan 2005)
Two Hearts Beat As One
Would be perfect:
Discotheque
EBTTRT
Crazy Remix Live
The best, though, would probably be Magnificent Redanka remix.
U2 as we have noted, has alot of "jump up and down" rock stuff, but not necessarily party dance stuff. To that end, I have always found that, in order to sound good in a club/party setting, U2 music really has to be played LOUD.
Think about it. You can get people moving in no time to Lady GaGa or Donna Summer or Shakira or some rapper at about any audible volume.