In the first Hangover film, what drug causes the ‘memory loss’ of the four friends who travel to Las Vegas for Doug's bachelor party?

Who among the following American sportspersons makes a cameo appearance in the first Hangover film?

Who among the following comedians and actresses appears as Cassie, a pawn shop broker in the third Hangover film?

This ‘performer's’ acting career began in Disney's 1997 film George of the Jungle. Also prominently featured in the Night at the Museum franchise, this ‘performer’ also appeared as a ‘drug dealer’ in one of the films in the franchise. Name the ‘performer.

This actor is the son of a renowned director. He appears in the second Hangover film as the brother of Stu's (Ed Helms) fiancée. Name his father, an Academy Award-winning director.