I have 2 dual screens with 1600X1200 resolution, this will confortably allow me to play 8 tables at a time without any kind of overlap or glitch in resolution. The box itself is pretty standard and nothing fancy except that it has a kickass graphics card.
And now for your visual pleasure here are some real real badass poker setup from the pros:
This is Tiller's setup, he has a TV hooked up to his desk as well, the two right screens are where he is playing online (8 tables, the 8 ovals).
This is Dag "dmikkel" Mikkel's setup. He is a high stakes cash/tournament player playing at nosebleed levels of $100/$200 and above (meaning at ay given time he is sitting with 30k+ plus on the table).
This is Cole "cts" South's setup, you can see the number of tables (the ovals on the left screen) he is playing at a time. And on each of those tables he is sitting with atleast 20k. (do the math)
Here is a recent 150k worth hand between durrr and phil ivey on full-tilt (this is what the online tables look like, the ovals in the pics above):
Ok, lets play some poker now!!! I can almost hear the money train going CHI-CHINGGGGGGG !!!