Best: Ipod, 60GB of music in your pocket! I could put a whole HMV store on it!
Clamshell ibook, beautiful industrial design, although the kind of thing that only a female would want to be seen with
G4 iMac, the best looking desktop mac ever, great design.
Powerbook G4 its a fine solid looking thin laptop, the best looking laptop in the industry.
Dashboard: Wow what a cool feature, fast access to information that you regularly need, best implamentation of the idea as well, konfabulator can suck it.
30" CinemaHD the size and resolution is amazing, actually I'd say extreme, more than what anyone should need for a while. Although what really impresses me is the quality of the color reproduction, it's the best LCD in terms of color quality I've seen.
Worst: Os8/9 What, co-operative multitasking in the late 90s? Absurd. OSX should have been around much earlier. Os8 was already sort of aged with it's old kernel and old style UI without anything comparable to a dock or task bar. Macos fell behind the competition in this peroid.
Mice: I can't think of an apple mouse properly designed for ergonomics. Apple mice are more likely to give you RSI than a logitech or microsoft one, and yes even mighty mouse. It's too low, doesn't properly support the hand as good as it's other features are.
23" Cinema Hd: My god what terrible red error is has, it'd be like living next to a neon sign.