Ah, Alan! I found him unbearably annoying on the pilot, and then I hunted down series 5 and, two episodes later, I wanted to take him home and pat his hair and do unspeakable things to him.

I haven't seen Bill's Kraftwerk impression, but I'm sure youtube will provide. I saw him on Room 101, though, and his Cockney-ing up "Lady in Red" was sheer genius.