Trapping move and sleep glitch (Generation I)
Read description for more information:
This glitch in Red, Blue and Yellow found by horouichigo makes it so that it's effectively never your turn while you're asleep. The only way to fix it in the battle is to use an item to remove the sleep status. According to the status memory address (D018/7), the sleep counter never decreases.
Steps:
1) Encounter a Pokémon with Wrap, Bind, Fire Spin or Clamp and Sleep Powder, Spore or Hypnosis (unconfirmed).
2) Have that Pokémon trap you.
3) Keep using healing items until the turn the trapping move effect ends. On the turn that it ends, if the opponent puts you to sleep you'll active the glitch.
Original video: http://www.twitch.tv/horouichigo/c/5460684
According to jscottSHADOW, the glitch can also be activated after switching out of Wrap's trapping effect and immediately being put to sleep (it may or may not be required for the Pokémon to use Wrap again after sleep).