5. Because its TV’s best embodiment of modern-day pop culture.

Here are two irrefutable Glee facts: Many of Hollywood’s biggest names are dying to guest star on it, and the music industry’s top hit-makers are quick to give the show access to their discography (aside from Kings of Leon, that is). The reasoning behind both truths is simple—FOX’s mega-hit series has become a cultural institution that rests on the entertainment world’s pulse. While MTV—once our supplier of all things pop-cult—pushes overpaid guidos and sex-crazed teens, Glee continues to act as a melting pot of all that’s hot. If The Situation ever guest stars as Santana’s latest boy-toy, however, then we’ll have some problems.