Chase is 5 months old and so far he knows:
Sit (and Stay)
Down (and Stay)
Paw
Hi-five
Speak
Up
Rollover
Leave it
Wait
Come
"Do you want to go for a walk?"
Currently we're teaching him:
Spin
Play dead
He's a smart little bugger... only if I can train him to be 100% housetrained, which is the MOST important trick

.
I hightly recommend puppy kindergarten classes! We learned a lot from them, plus the socialization is really important.