Jerry Seinfeld’s war with Lady Gaga has got the "Showbiz Tonight" staffers in a feud of our own. Gaga wound up in Seinfeld's private V.I.P. box at a recent Mets game and he’s calling her “a jerk” for flipping the bird at fans and then getting upgraded. (Listen to Jerry here.) Line Producer Jenn Gerardo … Continue reading Behind the Scenes on 'Showbiz Tonight': 'Jersey' guys surprised?