Stumbled on this little gem last night on BBC4. Tragi-comedy about fanatical fans of an 80's sci fi TV series ("Children of Castor" think Blakes Seven gone wrong) on a cruise with one of the stars of the series who had fallen upon hard times (Rob Brydon). Also contained Steve Coogan as the other star who had gone on to greater things in Hollywood, David Walliams in an early role as a nerdy sci fi bad and James Corden looking about 10 and Jack Jones . A bit slow in places but overall, very good.

Wonder if anyone else has seen it ?

Kind of half-watched when it was first on - almost 10 years ago now, I think. Watched the second half yesterday and yes, it looked very promising. Apparently there was a brief early role for Russell Brand, but he was kicked off-set for stripper/drug-related shenanigans....