I used to have two screens, but found it was just more hassle than it was worth (for me) trying to divide my work between the two, plus gaming is no good across two (need 3) and it's more energy to run. With the new Windows 7 and snap-to window manipulation, I find one 22" screen is more than good enough for my needs. Thinking about upgrading my Samsung SM226BW to a Dell 2209WA though, just struggling to justify another £100 on top of what I'll get second hand for the same size monitor (even though TN<IPS).