Question: Is Jack Handle actually a person in Step Brothers? Cause if so, we only hear his name when Robert announces that's who he will be moving in with.
Question: During the end credits when they are fighting the school kids, and they do the slow motion kick with the doves/pigeons flying, are they paying tribute to John Woo or Charlie's Angels?
Answer: It was John Woo's trademark long before a Charlie's Angels film was made.
Answer: I doubt it's a person. Jack likely refers to Jack Daniel's, and a handle is usually referred to as a half gallon. Hence the name Jack Handle.