My primary monitor was 1280x1024 for a very long time, and I always thought that widescreens suck, and I was completely sure that the next one is going to be as squarish as it can get, and that 16:9 is an abomination.
Then I was walking through the shop one day, and noticed that 24" 16:9 screen were sold for few dollars... Brought one. Now I wish I had a screen with 20:9 aspect or something like that, the wider the better, 16:9 is squarish. Especially if you watch movies or game. And yea, 1920x1080 is not really that huge of a screen, I could use twice the size. Of course, the old screen helps to extend and widen the desktop so 1920+1280 is somewhat ok, with 1280 desktop being unbearably narrow.
I'm glad I brought 16:9, black bars in movies are annoying, and a lot of movies are even wider than 16:9, so even on this format you'll get the bars.
Core 2 Duo E6300, MSI P45 NEO-F, Club 3D GTX 260, 4Gb DDR2-800Mhz, Audigy X-Fi Fatal1ty Champ1on ed., 0.5Tb+1Tb Seagate Barracuda 7200.12, 630W AXP, Samsung SyncMaster BX2450, ViewSonic VP171b