This is a really cool solution to the huge desk problem with triple-large-screen setups:
http://www.tomshardware.co.uk/forum/336 ... r#t2508335
It hadn't occurred to me and it's great because you can even use some kind of stool if the screens' stands are not too big, which cost virtually nothing while still leaving plenty of space for a properly placed sound system or other stuff, plus you can pull yourself back from the desk distance you'd be more or less forced to use with a desk and use either a coffee table if you don't mind slouching, or get a small desk if like me you want perfect ergonomics because you are into 5- or 10-hour gaming sessions.
Note that I don't advocate multi-screen setups for that size of screen -- or for any size really -- and projectors is where it's at, but there are legitimate budget/hardware reasons one might prefer them for, but I'll leave those for the huge and exhaustive article on the State of Gaming Rigs I've got coming up soon.