In no particular order, my top choices:
Powerbook G3 (except Kanga) - beautiful, but before my time.
Powerbook G4 (except Aluminum) - proud owner of a 1GHz Titanium Powerbook with superdrive.
iMac G4 - someday I will pick up a used one just to look at.
Cube - probably will always be outside of my grasp... but someday
Quicksilver Power Mac G4 - In years to come, I'll get one as a backup
Blue & White G3 - proud owner of 2.
1st, 2nd, and 4th Generation iPods - iPod user since 2001, and I extremely dislike the controls on my 3rd Gen, waiting for it to die, so I can get a new one.
I've been pretty much a fan of everything since Steve has come back. I agree with an earlier post about apple even making beige look good, the 6500s were pretty, and I've always wanted a 8600/9600/G3 Tower.