Back in the 80s and 90s, it was commonplace for television shows to dedicate an episode to some sort of message. Whether it was Donna's abusive boyfriend Ray Pruitt on 90210, Tom Hanks as Family Ties' drunk uncle, or the game-changing Jessie Spano caffeine-pill freakout on Saved By The Bell, each show took time for a cautionary tale that the audience at home couldn't ignore. Here's a look at some of the best, worst, and most memorable of the bunch. How did I ever forget about the time Shawn joined a cult on Boy Meets World?