Not my favourite episode but we can still have some fun with it.
Which character do you think told Howard the correct message from his father? ….and why. Do you think his father will make an appearance? William Shatner has been suggested by a few on the net.
Raj's 18th birthday card?
Sheldon's Goonies treasure map?
Amy's graduation story?
Penny's double-life story?
Leonard's message about not throwing away family?
Bernadette's baby photo story and gift message?
Personally, I think it's Leonard's message but I'm voting Penny's because it would lead to more fun. Even if the guy is crazy and thinks he's a spy it would work for me.