Misc: who betrayed king arthur by sleeping with his wife guinevere?

Questions

Category: Grease: She got her name because she was the best dancer at St. Bernadette's.?

Category: Grease: This was the rival gang of the T-Birds.?

Category: Grease: What did Frenchy do that made Sandy puke??

Category: Highlander: On Highlander The Series, what is the name of Duncan MacLeod's young partner??

Category: Highlander: What is the backdrop for the infamous 'cut scene' in the first movie??