Exchange information about how to teach specific tricks to parrots. Most of these techniques should apply to all bird species. Share your success stories.
Some good starter tricks would be the nod, shake head no, and turn around.
Michael posted a brief description about teaching the nod and shake here.
The 'wings' or 'stick 'em up' trick where you cue the bird and it extends its wings fully is cute too, but it might be easier to train once you've taught a few more behaviors.