I know some people might think this is lame but since I've seen others do it what the hell...
Here's Amazon's latest list of most popular videogame hardware/software... (As of 6:11pm est)
1. Halo 3
2. Xbox 360 Console (Premium)
3. Nintendo Wii
4. Playstation 3
5. Forza Motorsport 2
6. Madden 2008 (360)
7. Sony Playstation 3 Wireless Controller
8. Halo 3 (Limited Edition)
9. Wii Nunchuk Controller
10. Xbox 360 Elite
http://www.amazon.com/gp/bestsellers/videogames/ref=pd_dp_ts_vg_1/002-7409951-0061615