Football star Tony Gonzalez is one of the greatest tight ends to ever play in the NFL, but off the field, this Kansas City Chief's compassion puts him in a league of his own.

For years, Tony has supported the Shadow Buddies Foundation, a nonprofit that provides huggable dolls for severely ill children. He's also a Boys & Girls Club volunteer who's devoted to helping underprivileged youth.

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Oprah says she chose Tony to be a judge on her first primetime series because he's proven that he's a big giver with a big heart. "And the fact that he's really very cute did not hurt at all," she says.

Tony may look tough, but he says some Big Give challenges brought a tear to his eye. "The gamut of emotions that you go through by being a part of a show like this is just amazing," he says. "I think what America's going to see is that [giving is] a two-way street. When you give, you'll be receiving also."