Funny you should ask - just had an attack of "upgrade-itis", which was following closely on the heels of a (semi) impulse purchase.

Bought a Diamondback Transporter from REI outlet last week - then decided I wanted to get some clipless pedals for it - one thing lead to another and last night a box from UPS arrives at my door. So last night I installed:

Easton Vice AM Stem
Easton EA30 Monkeybar
Cane Creek Grips w/Ergo II bar ends
Thomson Elite Seatpost
WTB Pure V Saddle
Crank Bros Mallet C pedals
Cateye EL530 Headlight
2 water bottle cages

I also scraped off the white stripe decals from my fenders, which weren't applied straight or centered.

Hmm...so much for the 'cheap' bike...