Men in Black meet The X files, would be quite interesting. Although for the life of me I can't think why?
Star trek crew docked at Babylon 5
I have always wondered how a conversation would go between Farscape's John Crichton and ST capt. Picard.
Braveheart & Are You Being Served - an army of rebellious scotsmen get measured for new kilts which will ride up with wear, Mrs Slocombe’s blue hair dye runs down her face, and Mr Humphries makes a rousing speech about being free.