30 Rock (2006)

"Greenzo," Season 2, Episode 5 David Schwimmer plays Greenzo, NBC's new green mascot, who lets the attention go straight to his head, and Al Gore turns up in person. The target is corporate greenwashing, which makes it feel more current than its 2007 air date. Schwimmer commits fully to a character who is both an eco-hero and an obnoxious brand asset, and the show gets jokes out of every side of the network's sudden conscience.