Star Trek: Destruction by Alcohol

Alcohol and its effects on humans are well explored in the episode "The Naked Time", and how. A drunk Irishman from the Enterprise crew turns off the ships engine as its orbiting a collapsing planet and thats when the fun begins. The episode contains gems such as, a shirtless Sulu wandering the hallways with a sword, Scotty saying "I cannot change the laws of physics", traveling backwards in time and other geeky astrophysics fun. And best of all? Discovering the formula to travel back in time, how exciting.

Star Trek: The Original Series / The Naked Time