Watch Oprah open Adam's unforgettable gift
Oprah is left in stitches. "I thought he was delightful and came to play. That's always great when guests do that," Oprah says. "I would have to say that, perhaps more this season than any other season, guests have come to play."
See what Adam really gave Oprah after the show
After two segments with Piers tape, Oprah's birthday show is deemed a success. "I was thrilled with the show in the end," Jill says. "Everyone ended up bringing their A-game."
Find out what else happened during Oprah's birthday show