There seems to be some news around that you cannot watch bbc iplayer on the 360. Just install the i player on your PC then stream it to the 360 with media center (vista or MCE). the only problem i had with it was the security permissions need changing to allow the mcx1 (the system account that the 360 accesses the pc as)system account access to the download video file.
Not sure but if you install the MCE web browser you maybe able to select and download the video from the bbc site, then you only need to change the permissions on the video file, i have try changing some of the permissions groups and running different bits under different accounts but have not got around it yet, probably something really easythat i have missed.
