Watched this last night and I've literally had Carl Poppa stuck in my head all day.
Me either. It's still not as bad as when they did the Governor singing Broadway. I had that song stuck in my head for weeks.
The blonde headed guy who gets the baseball bat to the head is Sam. He was the guy with Ana that Rick and Carole ran into on a supply run. Carole set his dislocated shoulder before he disappeared and Ana was eaten by some zombies.