Mike Hagerty, who played Sam's father in Somebody Somewhere, died before they started filming the second season. I always thought keeping the character alive off-screen was a good decision and kept his memory alive.

I miss Lee Sun-kyun. There was supposed to be a second season of Dr. Brain coming out, and even though I didn't particularly like the first one, I would have checked it out just for him. Rewatching Coffee Prince or My Mister scenes will never be the same.