When it comes leaving your mark in a short of amount of screen time, actor Debi Mazar should be teaching a master class. Widely known for her big-screen roles in Goodfellas, Singles, Batman Forever and Empire Records and on TV courtesy of L.A. Law, Entourage, Dancing with the Stars, and most recently SyFy’s Happy and TV Land’s Younger, Mazar’s brash New York accent has served her well. But nowhere did it come in handier than in 2002 when she solidified her status as a Friend of Friends. In The One Where Rachel Has a Baby (Season 8, Episode 23) Mazar made a lasting impression as Doreen, one of a procession of expectant mothers paraded before Rachel (Jennifer Aniston) while she endured 21 hours of labor. What made Mazar so memorable as one of the expectant mothers was her extremely colorful battles with her husband, while Rachel lay helpless in a nearby hospital bed.