The 23-inch Apple Cinema Display that sits on my desk is the nicest monitor that I've ever used. It's incredibly crisp, has great, bright colors and runs at 1900x1200 resolution. And for over a year, this has been great by me, but the other day, I looked on the back of the box and saw that the graphics card had a second DVI port. This thing could dual-head. I pondered how to get another monitor for about a weekend and thought of bringing in an old CRT, but I don't really have the desk space for it.
Then this morning, I realized that there was a 21-inch Dell 2000FP LCD just sitting on the floor in my office. So I hooked it up, spent some time calibrating and now the two monitors are running side-by-side. It's ridiculous. Seriously. Ridiculous. I basically have to invent things to put on the second monitor. The Dell runs at 1600x120 resolution so that comes to (1900+1600)*1200 = 4.2×106 pixels of screen real estate in one really wide strip. Here's a picture taken with the iSight:
