Watched them over the past 2 nights. Got to admit that I enjoyed the unexpected humor in Serenity and DOOM wasn't as awful as we thought it would be (apart from the premise of the number of humans who would be genetically predisposed to evil.)
Anyway, at 2 quid a pop it was worth it.
Also if you like Adam Sandler / Rod Sneider type comedy you could do worse than investing £3 on a copy of Benchwarmers. Pant wettingly funny but not sure of the age group it was aimed at.
Ogre