Dell S2240L IPS 21.5" Monitor - $136
Just bought 2 of these for myself to complete my Eyefinity setup, thought I would post for others. $50 off what they usually are, very good deal. Other great deals are to be had on the site including the 24" version for $186.
EDIT: Appears to be out of stock of the S2240L 21.5", 24" is still in stock though.