I own all the DVDs, and have watched all of the special features and commentaries on all the episodes, most of them several times. I have whole sections of dialouge memorized as well as knowing a lot of little details. I'm good at placing a random quote, character, or scene, into its correct episode and season. I can also fill you in on all details of any minor character that ever appeared on the show or any answer any minor triva-type questions. However, I don't know much about the actor's real lives, or products seen on the show.