Lisa Kudrow, like Phoebe Buffay, isn't known for holding her tongue. To prove this character trait once and for all, Kudrow dared to weigh in on the decades-old "were they on a break?" debate between Ross and Rachel from her cult TV show Friends. She appeared on The Tonight Show Starring Jimmy Fallon, where she broached the tricky subject with host Jimmy Fallon - after discussing how nostalgic it was for her to return to the Warner Bros. lot where Friends was filmed to make her newer show The Comeback. Ross was a controversial boyfriend.