he cast of "Friends" are torn apart by tantrums, power struggles and constant feuds. The six stars may have just negotiated a $750,000 per episode, per person, deal but the cast of the hit TV show aren't happy, according to The Star tabloid. David Schwimmer, Jennifer Aniston, Lisa Kudrow, Matthew Perry, Courteney Cox Arquette and Matt LeBlanc often refuse to talk to each other on set after the camera has stopped filming, according to a former "Friends" staffer who recently left the hit show. The former employee says, "The three 'Friends' everyone -- writers, producers and crew -- hate most are Lisa, Jennifer and David. The other three are not so bad.