* "Closing Time" by Semisonic was used in the *Seinfeld* series finale, "The Finale", as Jerry and Elaine leave Monk's.
* "Good Riddance (Time of Your Life)" by Green Day was *not* used in the *Seinfeld* finale. It was featured in the final episode of the television series *Friends* ("The Last One").
It's easy to get these two songs mixed up, as they both have a bittersweet, "end of an era" vibe and were used in popular sitcom finales.