HOW I MET YOUR MOTHER: Is John Lithgow Barney’s Dad?

From serial killer to Stinson’s pop?

According to TVLine.com, acting legend John Lithgow (DEXTER, THIRD ROCK FROM THE SUN) is nearing a deal to play Barney’s father on HOW I MET YOUR MOTHER.

CBS would not confirm the possible casting at this time, but sources close to the show say there is a quiet excitement building about Lithgow appearing on HIMYM.

Word is, as of now, Lithgow’s deal would be for just one episode.

But Lithgow does seem like a kick ass choice to play the Barnacle’s dad, no? Even if the last time we saw him onscreen, he was killing people as a hobby? I mean, the man is a pro and no stranger to comedy.

Plus, it’s about time that Barney (Neil Patrick Harris), who has been wondering about the identity of his biological father for several seasons now, came face to face with the man who spawned him, no?

Any thoughts?