I figured it must finally be time that I took some pics of my current commuter... Surly Cross-Check, bought about July last year. Drivetrain is stock from the basic Cross-Check build with somewhere around 1500-2000 miles on it. Has knobby tires in the pic, but on the weekend I changed them out for my summer tires (700x28 Armadillos). Have added:

Crank Bros Candy SL pedals
Brooks Team Pro saddle
Planet Bike Freddy fenders
Blackburn Expedition rack with Arkel T-42 panniers (laptop etc in one, clothing and lunch in the other)
Lights (two read LEDs, front 10W halogen + LED)

This has been a fantastic bike for my commute. Very comfy, and the stock gearing has been great for the terrain and load. It's getting a brake upgrade soon, but I'm not sure yet whether I'll go with cantis (Avid Shorty) or V-brakes. Also on the cards is a new wheelset.