Every year for Children in Need, the Doctor Who team puts together a little mini episode for charity. Generally they're a lot of fun and very silly, but the official one this year seemed a touch underwhelming (even though Matt Smith does take his clothes off):
But it was all a trick! Sort of. A further FOUR mini episodes were released that were only mildly silly, and fit in with the ongoing storyline (and are really rather good). Head below the cut to check them out (and for an extra little surprise).
In 2007 the Children in Need special featured current (at the time) Doctor David Tennant, and he was paired up with Fifth Doctor Peter Davison. It's a lot of fun, and it is wonderful to see Tennant in all his fanboy glory.