List of Original Xbox Games Playable on 360!

Microsoft has released a list of over 200 original Xbox games that will be playable on the Xbox 360 upon launch, with a promise that more games will be supported through software updates in the future.
But hold your horses, Since an emulation software is needed to run the games, the version of the console with a hard drive will be required. Quality on older games will be improved as well, with the Xbox 360 upscaling the graphics to 780p or 1080i high-definition. Future compatibility updates will be delivered free of charge.
Here is the link and a partial list;

The folks at Xbox® are working hard to add more of your favorite games to this list, so check back often for the latest updates.

Note: A software emulator is required for each original Xbox game you play on your Xbox 360™ console. Please check back for more details as we approach the launch date.

* AirForce Delta Storm
* Alias™
* Aliens versus Predator™ Extinction
* All-Star Baseball™ 2003
* Amped®: Freestyle Snowboarding
* Army Men®: Sarge's War™
* Atari® Anthology™
* ATV: Quad Power Racing 2™
* Baldur's Gate™: Dark Alliance™ II