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In 1994, the soon-to-be smash sitcom Friends was just in its nascent stages. While the cast was still getting familiar with each other, ET was on set getting the stars to reveal their unconventional bonding methods.

Jennifer Aniston on Her Alleged Feud with Angelina

While no one really knew one another, they all shared a common hobby -- poker -- which the cast played together when they had downtime on the set. They even went as far as taking a one-day trip to Vegas.

"Warner Bros. let us have the jet to go to Las Vegas," said Lisa Kudrow. "We gambled and we had fun and we had dinner and we flew back on the jet."

Watch the video for more with Jennifer Aniston, Courteney Cox, David Schwimmer, Matthew Perry and Matt LeBlanc, playing pranks and cracking each other up just before becoming mega stars in Hollywood.