Games: Oblivion, Tomb Raider Legend demo, FarCry + HDR (yeah it's old, but it looks damn goregeous on the first level!), Call of Duty 2...
As for your monitor business, I'd suggest getting a nice CRT. Around Christmas time, I ordered a Dell P1130 from eBay, refurbished and it was $135 shipped (68 friggin pounds = mass shipping). A friend of mine bought the NEC FE1250+ for $200 refurbished/shipped from Azatek.com, or you could try
www.accurateit.com for some nice monitors. Refurbished is a fraction of the cost, and the websites (not ebay) usually offer an extended warranty. Recently my dad found a good deal from a friend, $25 for a Sony GDM-500PS, a 21" CRT. Heck, you could even check your local newspaper's classified ads... I've seen some nice monitors in there!
Moral of the story: 7900 GT SLI is useless unless you have the components to show them off. Yes, that includes a nice monitor with a high res.