''Jessie's Song,'' Saved by the Bell
Another ''Why didn't this happen sooner?'' episode. High-strung alpha teen Jessie Spano displayed all the signs of a future addict compulsive behavior, an all-or-nothing opinion toward failure, and a tendency toward overextending herself. But Bell's utterly '90s tipping point the production of an aerobic-themed video for Jessie's girl group Hot Sundae is what gives ''Jessie's Song'' the edge over other series VSEs about topics ranging from marijuana to drunk driving. Well, the Hot Sundae video and Jessie's instaclassic Pointer Sisters riff: ''I'm so excited! I'm so excited! I'm so…scared!''