The last time I wrote about a GeForce 8600 video card, it was the GT variety, and it was selling for $99.99 plus shipping. If you decided to wait, good move: Buy.com now has the even better GeForce 8600 GTS for $69.99 shipped (after a $20 mail-in rebate).
Why is the GTS better than the GT? Simple: It's faster. It has a faster core clock and faster onboard memory (256MB of it). That's important if you're into power-hungry games like BioShock and Call of Duty 4.
The PNY GeForce 8600GTS card requires a PCI Express slot, a 6-pin power connector, and a 350-watts-or-better power supply. If your system meets those requirements, this is a seriously sweet deal on a powerful video card. Look around: Most vendors sell the same card (or similar ones) for twice as much. So even if you skip the rebate (which ends March 25), you're still getting a steal.