it plays some old xbox games
No, its a totally different format.
All of the Xbox 360s may play games. They are priced differently because of either memory space or package deals.
You can play some Xbox games on the 360 but on April 14th Microsoft will be ending that feature for Xbox live but you will still be able to play them off line. go to Xbox.com to find the list of games that you can play.
Hell naw
All Xbox 360s can play all the Original Xbox Games on this list http://www.xbox.com/en-US/games/backwardcompatibilitygameslist.htm provided that you have an Xbox 360 Hard Drive and can update the game with Xbox Live or through a computer and USB flash drives or DVD/CDs
all xbox 360 controllers are compatible with all xbox 360s
no but you can play xbox games on an xbox360NO
Yes, Xbox 360 can play Xbox games.
Yes you can play Xbox 360 games on the Xbox Original
The Xbox 360 can play original Xbox games but the Xbox doesnt play Xbox 360 games.
You can no longer play original Xbox games on Xbox Live.
its impossible to do it. to do it you would need two xbox 360s with xbox live its impossible