Continuity mistake: While Kim is holding the baby for the first time, she has her right hand under the baby. When JD asks if he can hold the baby, her right hand has moved and is holding the baby's head.
Continuity mistake: Turk says two players are needed to finish the game. Carla later says she has finished it several times herself when playing in the middle of the night.
Answer: This is an American comedian called Scott Thompson, more widely known by his stage name of "Carrot Top".