Donald Trump is again joined in New York by a group of 18 celebrities who compete in business challenges to raise money for their favorite charities. Trump's children, Donald Jr., Ivanka and Eric, help advise the competing teams as they complete their tasks and weigh-in in the board room. This season's star-studded cast -- including actress Tia Carrere, comic Lisa Lampanelli, "American Idol" runner-up Clay Aiken and magician Penn Jillette -- looks to bring record-breaking donations to many worthy causes.