Ten best Star Trek: The Next Generation episodes
"Cause and Effect"
This season five episode could arguably earn a spot on this list by virtue of its cold open: the Enterprise is damaged, things go downhill and blammo, the ship explodes. That's right: just minutes into the episode they kill every damn member of the crew and destroy the entire ship. Then we start over, and relive a series of events over and over until subtle clues tip the crew off that they've been reliving a time loop and Data manages to send a message to his next time-loop iteration that saves the day. It's a strong episode that gets pushed over the top by a brief, but awesome, guest role by Kelsey Grammar as the captain of the USS Bozeman. That's right, kids: Frasier is a starship captain in the Trek universe.