order at apple.com and get laser engraving
(its free)

So put in a special message or something.

I think the current generation is the G4.

Don't get a mini, they are way overpriced compared to the others.

20gig sounds good, although 20 gigs is alot of space. Mabey 15 or 10 would be better.

But remember if you order online you get laser engraving :-P