I recently have softmodded my Xbox and I'm having a blast with it. Honestly, I doubt I would have anything else hooked up to my TV beside my Xbox if it wasn't for 1 factor: Guitar Hero. I absolutely love the game and have played it since GH2 first came out for PS2 in 2006. I recently came across a game called Guitar Fun, which is a homebrew GH clone for PS2, PC, and Wii. Since it was open source, I instantly thought this game should be ported to the Xbox. I was thinking since many modded xbox owners have USB adapters to their Xbox, it should be possible to hook up a keyboard to the Xbox no problem to play the game like Frets on Fire. Also PS2 -> Xbox adapters aren't that hard to find and aren't that expensive, meaning that people could use PS2 Guitar controllers (Which is what I would like to do). Anyways, I don't know anything about developing for Xbox and was hoping someone could port this to Xbox.
Also before anyone mentions it, I did see the FoF thread a few posts down. I know people are asking for a port of Guitar Fun. I thought since FoF isn't likely to be ported to Xbox due to system limitations, there should be a post dedicated to Guitar Fun.
For developers looking for the Guitar Fun v3.5 source code, here it is: http://mods.elotrolado.net/~hermes/guitarf..._3.5_source.rar
Here's a screenshot of the game (Wii Version):