I have believed for a long time that Biden is actually the puppet master running the show and his "uncle Joe" schtick is just cover. He's so good at it, no one suspects and people laugh when you bring it up, but you can't argue with his success.
Something about Biden's bizarre behavior during the "debate" reminded me of something, but other than dealing with an old alcoholic who's had that "one drink too many" and changed from Dr Jekyll to Mr Hyde, I couldn't put my finger on it.
Finally while mowing the yard, I remembered the evil Senator Palpatine's taunts and cackling laughter during his final battle with Yoda on his way to becoming The Emperor. That was it.
Biden is the evil Sith Lord coming face to face with young apprentice Ryan. True to character, Biden had nothing, but he and the hostess used their darkside progressive mojo as best they could against the young apprentice.
Ryan, while not as experienced, was strong in the force and kept his cool. Time for a new hope.
Interruptions counted documented here:
Unprecedented Watch Joe Biden Interrupt Paul Ryan 85 Times During Debate
http://www.youtube.com/watch?v=xa16wBG9J78