2 macs in the house, what fun/cool things can we do?

Hi everyone, I have a macbook with tiger i got about 2 years ago and i love it, no complaints. now, another family member of mine is getting a brand new macbook (with leopard, obviously). i'm excited about this thought, because it's given me the chance of thinking up interesting things we can do with them. for example, i'm considering buying leopard (for time machine), and then we'd get time capsule for the house, so we could share documents, etc.

other ideas i've had include iChatting, using an apple tv to show pictures from each laptop, etc.

can anyone think of any other ideas?

thanks!!

Get a couple of copies of Unreal Tournament 200X (2004 is what I have), set up one as a server and try to frag each other? That's what I'd do if my wife was a gamer of any kind (and even I'm not really) but otherwise we video iChat with each other when necessary.