If you're ever in the driver's side backseat of a Trailblazer and Christopher Lloyd is standing outside talking to your dad, who's in the driver's seat, and he reaches his hand through the window to shake your hand, watch out! He has a firm handshake and you'd better reciprocate and make him proud. While you're doing this you'll think, "I forgot that my family knows famous people. I'd better squeeze Christopher Lloyd's hand tight to impress him." When you do this he'll smile and compliment you on the shake.