There is a very lengthy thread in the "Community" forum in the "Pictures" subsection.....I think it's called something like "Post your Mac setup." Loads of photos of every possible kind of desk/workstation imaginable!
As for mine, I have two, and I got both at Staples; they're made by Z-Line. I saw them in the local store first, and then ordered each of them online at different times. The larger one is the Z-Line Matrix Compact Desk, Item #473068, Model #31745 ($199.99) and the smaller one is the Z-Line Expo Glass Desk, Model #SP4052-1D (I have misplaced the sales slip but I believe it is around $75.00). I was tempted to order a second Z-Line Matrix (larger desk) instead of the smaller one, but reason prevailed and I knew I was limited on space. The iMac is very happy on the smaller desk! Each desk is constructed to allow an extra shelf/monitor stand rising above the main part, but in both cases I did not want that; IMHO the desks are more functional without it. The larger of the two has a glass keyboard shelf, while the smaller one has a metal keyboard shelf.
The larger desk is 48" wide and the smaller one is 33.5" wide. I really love them -- they provide plenty of work space and they're elegant and functional.
I got the larger one back in mid-June and then after I ordered my Mac Pro and knew I'd need additional work space, I went ahead with getting the smaller one. I'm very happy with both of them!
Mac Pro is positioned on the floor at the left of the large workstation, and you can see the G5 iMac.....