Some of these may be a little *a'hem* ,dated....but they are still good celebration songs ( at least to an old 30 something like me
)
Maybe they can at least give you some more ideas
Celebrate : Kool and the Gang
Twist and Shout : Beatles
Footloose : Kenny Loggins
Hey Ya : Outkast
Lets Get It Started : Black Eyed Peas
Busta Move : Young MC
Jump : Kris Kross
Shout : Isley Brothers
Touch The Sky : Kanye West
and last but certainly not least.....
Can't Touch This : MC Hammer
I'll try to think of some more hip/cool/actually popular in the 21st centuary songs 
