No you can not, it can not handle it.
Java is not a part of the XBox 360 software, so while you could conceptually download Java, the XBox 360 lacks the necessary software to run such an application.
Depends on the game. Some xbox games are available for download through the xbox marketplace.
No, original Xbox controllers do not work with the Xbox 360, so any games you download from Xbox Live Marketplace will use the Xbox 360 controller.
Yes, you can either buy the Xbox original game (compatible with 360) or download it off live.
It is a preloaded program that "mimics" the original xbox's spec's, making it possible to play xbox games on your 360. This is also why you will notice that you don't have the normal Live options available to you when playing an original xbox game, as your console is, for all intents and purposes, "pretending" that it is an Xbox, not an Xbox 360.
No, an Xbox 360 game will not run on an original Xbox.
In short: no. The Xbox 360 has to install an original Xbox emulator program to run the Xbox games. It stores this emulation software on the hard drive.
Tube TV is a piece of software you can download for free. The kinect is used to for Xbox 360, which can be played on any TV.
No, but you can purchase an Xbox Original version, then download an update for it from Xbox Live, if you have an account.
Yes, but not all of the original XBOX games. You can either download the ones that are able to be played on the XBOX 360, or put in the disk to the games that are allowed to be played.
No they do not, but you can play certain Xbox original games on Xbox 360
Original or 360? Either way the best place is ThePirateBay at thepiratebay.org