I mounted the cassette, rear derailleur, and cranks:
As I've been doing this, I'm learning some of the tricks bike builders and photographers use to get those sexy bike show pictures. If you use some shiny, blingy parts, and keep everything cleaned and shined, you can make even the most clunky toy-store frame look like it belongs in a handmade bike show. But as soon as you lube everything up to go ride, you lose most of the glamor.
That's not to say you should not get a bike just because it's beautiful in the shop. Emerson reminds us that beauty is its own excuse for being, and Hopkins says it in his own way (Hopkins always does; he must have been a pain to live with; can you imagine asking him a simple question about the weather?). But don't expect a bike you use to stay beautiful in that way... the shop-perfection, if you will, will be replaced by what Grant at Rivendell Bikes calls "beausage". (Hrmph. Others evidently use this term, too!)