Tracy Morgan is back at work, taunting Alec Baldwin Tracy Morgan was out of the hospital Monday and back to work on "30 Rock" Tuesday after collapsing over the weekend in Park City, Utah, altitude 7,000 feet. "On the set of 30 Rock, just walked past @alecbaldwin and said Top That!," he said Tuesday afternoon on Twitter. Costar Baldwin made headlines of his own recently when he was kicked off a plane for refusing to stop playing Words With Friends. Morgan collapsed at a party at a Creative Coalition event where he'd received an award. "Superman ran into a little kryptonite," Morgan explained Monday on Twitter. The high altitude in Utah shook up this kid from Brooklyn. Ron Nyswaner, co-director of the Sundance film "Predisposed," in which the actor stars, explained things a little more scientifically, citing "altitude sickness combined with his diabetes. And he hadn't eaten. He hadn't had enough water. Lewis Kay, Morgan's publicist, said drugs and alcohol weren't involved.The actor had a kidney transplant in December 2010. Tracy Morgan hospitalized after collapse at Sundance [Video] Tracy Morgan apologizes for homophobic rant during Nashville comedy show Photo: Tracy Morgan at the Creative Coalition's 2012 Spotlight Initiative Gala Awards Dinner on Sunday at the Sundance Film Festival in Park City, Utah. Credit: Frazer Harrison / Getty Images.