I'm going to have to hunt you down and kill you for that I think. Sacrilege!
He played a lot of stuff I didn't like (I've never been that into the post punk and new wave stuff he loved), but I also discovered a fuck of a lot of my favourite music through that show. The breadth of his tastes was incredible. I challenge anyone to listen to one of the shows and not find a single track they like.

He was the first person to play reggae on national British radio.
He was the first person to play hip hop on national British radio.
He was the first person to play Welsh language music on national British radio.

(and probably a load of other firsts, those are the ones I'm aware of though)

One of my heroes. Listened to the Radio 1 show religiously for years, still have a massive cardboard box full of taped shows I've been meaning to record into the computer.

Met him very briefly once at Glastonbury and he was as lovely a chap as you'd expect.
(Son of Sam-i-am We're all as mad as hatters here, Fri 6 Mar 2009, 10:55, Reply)