I'm a big Stephen Mulhern fan, he's probably my most favourite magician.
I watched CITV everyday back in the late 90's so saw him on my TV literally every afternoon, in 1999 he had his own magic TV show called 'The Quick Trick Show' which I loved and my love for magic grew from there, if you've not seen it, there's an episode here...
http://www.youtube.com/watch?v=KPLlxpl796s
That ended around 2002, and then he did 'Tricky TV' which wasn't as good, But I have TQTS video they released and some episodes which were sent to me by a kind friend.
In 2000, I actually met Stephen, where CITV was filmed wasn't far away from where I lived. It was at a party in a pub, and he was with someone else who presented CITV called Tom Darville, allthough now his name is Arthur Darville and you might know him better as Rory in Dr.Who!
well I spoke to him and asked him to do a trick, so he got a £2 and made it disappear and pulled it out my ear
he then gave me the £2 and I got his autograph which is on the back of a beermat, the autograph says "To my mate Jack, magic wishes, Stephen Mulhern, CITV!" greatest kids tv personality i've seen/met, and I've met a few!
Anyway, back to the magic side of things, he has done some pretty awesome magic tricks, one of my favourites is at 12:55 in this video, at first he produces goldfish by rolling up a map and pouring them out, but the best trick is after that. Upon borrowing a spectators coat, he makes a pile of fishbowls (complete with water and fishes!) appear from no where
http://www.youtube.com/watch?v=El7cnr-g_nY
His magic has mainly been for children but he recently did a gameshow called 'Magic Numbers' where he performed one trick each show, it was good to see him performing magic again, but sadly the show was a ratings flop, but I did read somewhere they're thinking about giving him a prime time magic show, which sounds interesting