Christina Pickles played Ross and Monica’s mom on the hit show “Friends,” a role that even scored her an Emmy nomination. When Christina caught up with “omg! Insider” correspondent Keltie Colleen, she dished all the deets about the tight-knit cast and even revealed which cast member was the biggest flirt. Check out the vid to see who she chose and for more on the latest in entertainment news, tune in to “omg! Insider” on TV tonight!