7. Voyager "The Thaw"
Even the amazing Michael McKean couldn't save this one. This is equally as preposterous as "Move Along Home", and quite similar as well. The crew is trapped in a crazy computer program which is run by a psychotic clown played by McKean. The episode is largely incoherent and all around just absurd. I think it was trying to be silly and sinister at the same time, but it just came off as retarded and ridiculous. On a television series whose very existence is offensive and stupid, this is probably THE most offensive and stupid episode of the bunch.