Are you able to put videos off a PC onto a 360? If so how and what formats are supported?

You can put the videos on your 360 if you have them linked up and I do believe the only format supported is Windows media player, could be wrong about that though. Xbox.com | System Use - Use a PC with Xbox 360 (http://www.xbox.com/en-US/support/systemuse/xbox360/digitalmedia/pc.htm) This link has all you need to transfer things from your PC to 360.