Sure, why not? NVIDIA’s just announced 3-way SLI and is now one step closer to having your entire case filled with video cards. According to the company, "Now hot, new, graphics-intensive titles, such as Call of Duty 4, Company of Heroes Opposing Fronts, Enemy Territory: Quake Wars, and Unreal Tournament 3, can be played at the highest resolution possible, with all the graphics settings cranked to the max, and antialiasing applied for the first time."
That’s actually refreshing. I can’t remember the last time I was even able to crank a game from two or three years ago all the way up. Now to take out a home equity line to pay for all this stuff.