Not sure if there are many Smallville fans on here but I know there are lots of Buffy ones! I picked this snippet up from the Radio Times newsletter this week:

"Superman gets bite

A treat for those of you still pining over the loss of Buffy the Vampire Slayer: in a cult collision guaranteed to get the fans drooling, James Marsters, alias Spike in Buffy and Angel, is set to join the cast of Smallville for its forthcoming run.

The actor, whose run with the hit shows ended two years ago, will play Professor Milton Fine in the fifth season of the teen-Superman drama, although whether he'll keep his Billy Idol image is as yet uncertain..."

I await with baited breath!