I only found out about these today. Jesus, no wonder I don't listen to the radio (other than Craig Charles and Bob Dylan of course)...
My compatibility is...
http://www.last.fm/user/bbcradio1
VERY LOW
http://www.last.fm/user/bbcradio2
VERY LOW
http://www.last.fm/user/bbc6music
LOW
http://www.last.fm/user/bbc1xtra
VERY LOW
(I nicked this from the Sweeping the Nation blog:
http://tinyurl.com/yodxdc )

.
i'm the same.
I have a low compatiblity with Radio One
I am pleased
BBCR2 - Low
BBC6M - Low
BBC1X - Very Low
...
BBC Radio 1
Low
BBC Radio 2
Low
BBC 6 Music
Medium
1 Xtra
Very Low
'You share a few artists in common, including Marvin Gaye, Public Enemy, OutKast, De La Soul, and James Brown.'
- Dunno where the hell James Brown's come from.
Low, Low, High, Very Low
Most curiously, from the 1Xtra page: "You share a few artists in common, including Lupe Fiasco, Amy Winehouse, Dead Prez, The White Stripes, and Arctic Monkeys."
- those last two
wtf?
mm
r1 - low
r2 - low (OneRepublic as top artist? no wonder I stopped listening!)
Your musical compatibility rating with bbc6music is:
Medium
You share a few artists in common, including Super Furry Animals, Belle and Sebastian, The Smiths, Radiohead, and Ramones.
1xtra - low.