Gasp!
Something I'm good with! ;D

I work with Monitors all day, selling them and such.
A small list of my personal favorites are as follows:
LG 22'' (W2252TQTF). I use this one personally. It is AMAZING.
HP 22'' (W2207H). As mentioned, 22'' monitor with HD capability. Rotates and twists QUITE a bit. Fun little thing!
Samsung 22'' (T220). Very nice monitor once again. Text doesn't seem AS sharp as others with my experience though.
A basic specs rundown is as follows:
LG supports a 10,000:1 Contrast ratio
Samsung supports a 20,000:1 Contrast ratio
HP supports a 3,000:1 Contrast ratio.
Both LG and Samsung offer a 2 ms Response Time
HP offers a 5 ms Response Time
My personal choice between the three would be the LG. I run it through DVI to my graphics card and it looks and runs awesome!
I'd avoid the HP unless your graphics card supports an HDMI input on it. It has a horribly glossy finish which reflects EVERYTHING. This glossy finish is found on both the screen, and the shell of the monitor, meaning finger-prints will also be a huge issue.
Once again, I'd say go with either the Samsung T220, or the LG W2252TQTF. Similarly priced, similar specs (With the Samsung topping out by it's contrast ratio), and similar in terms of how they look.
4GB DDR2 PC5300; 3.2GHz Pentium D 940, Nvidia 9800GT 1024MB DDR3, Windows XP Pro SP3