Procopius

By a strange coincidence I was watching Mark Gatiss talking about Hammer horror films earlier (not sure if this is watchable outside the UK though):

Mark Gatiss! I remember when he was writing Dr Who New Adventures.

Also, my favourite Roger Corman story is this: during the filming of Rock 'n Roll High School (featuring America's greatest band), which he executive produced, director Alan Arkush was informed that the actual budget was somewhat lower than the official amount, because Corman was using some of it to re-side his house.