Because I wanted a fairly fancy chair and didn't really give a crap about having an "executive-looking" desk, I splurged on the chair a bit ($299 on sale for $249), got a fancy n-way adjustable keyboard tray second-hand ($100), and a Fredrik desk from Ikea ($149).

Chair: http://www.officedepot.com/a/products/510830/Realspace-PRO-9...

It's super comfortable and adjusts in height, seat depth, back height, armrest height and position, etc. The only downside is that it could use another half inch of seat height (and I'm not even six feet tall)

Desk: http://www.ikea.com/us/en/catalog/products/60115989

I can't say enough good things about this desk. I've got the first of the two top shelves about six inches above the desktop with two 19" monitors on it. With bigger monitors I would take it down one notch, but there would be room for dual 27" screens. I did have to put a couple of spacers to mount the keyboard tray, as there's a cross-brace that's in the way.

Here's my setup: http://img39.yfrog.com/i/fobj.jpg/