Remember Charlie in the mail room, Dee running away in stolen heels, or Mac's interpretive 'coming out' dance?

Whether it was the idea of watching a gazelle being born or Danny DeVito's willingness to do it, the couch scene seems even funnier now than it did 15 years ago.

McElhenney recalled DeVito's enthusiastic response to the idea itself, as well as the inspiration behind it. "I said, 'Danny, I wanna show you a video,' and it was a video of a giraffe being born ...