Leonard, Judd Hirsch is your father ...
The casting announcement happened Wednesday at PaleyFest in Los Angeles, and apparently Leonard himself was behind the whole thing.
Actor Johnny Galecki supposedly met Hirsch at the NBC special for James Burrows and, according to Galecki, "bombarded" him about the role.
"I just accosted him and cornered him and practically made him commit on the spot to play my father," says Galecki.
The actor, who says he actually watched Hirsch's character in "Taxi" as inspiration for his own role on the show, then pitched the idea to showrunner Steven Molaro. That pitch obviously went well.
At this point, not a lot is known about Leonard's father. He's supposedly an anthropologist and he and Leonard's mom, Beverly Hofstadter, are divorced.
Now that we're finally getting answers, perhaps the show can take on some other "Big Bang Theory" mysteries as well. Molaro said the show is "open" to meeting any of the missing family members, so it looks like The Force is with us.