For the sake of fun, here's my idea for a new TAM (Thirtieth Anniversary Macintosh): A 30" Black iMac case, with a 3.0Ghz G5 in it (for the sake of Steve's original promise), for $3000. Not $2999, mind you, but exactly $3k, because it sounds cooler.
I'm expecting the Intel iBook sooner than anything, though.