I'm in a folk band and I can't think of any songs that are happy and a good time for everyone involved, except "The Lion Sleeps Tonight". So I'm asking UG,

What are some acoustic songs to play that are fun both to play and listen to?
some of the led zeppelin songs with acoustic in it are great
My gear:
Line 6 spider 2 75 watts
ibanez rg 570
fender hss hwy 1 stratocaster
washburn acoustic
Polly by Nirvana is easy, but i like it becasue its fun to play.
Southern Man by Neil Young is fun to play on acoustic.