Friends star David Schwimmer has been labeled 'jealous' and 'despicable' by the monkey trainer who looked after his capuchin co-star Marcel, after admitting that he hated working with the primate during the first season of the show. Schwimmer, 54, was quick to complain about his on-set experiences with Marcel during the recent Friends reunion , in which he accused the monkey - played by two female primates called Katie and ...