That’s what I figured.
Excellent job. Still need the bonus questions. 
Your guess on the final bonus, while quite interesting, and not at all wrong, isn’t what I was thinking. So it’s still an open question.
The thing is, with the core shows I asked about, there are dozens more interesting connections. While in idle thought last night, I came up with a bunch more ways to go from A to B.
David Hyde Pearce was in AFV as well, so think what other paths one could come up with there.
Queen whose SO has a son who’s engaged and a conservative (ex-)wife … doesn’t seem that obscure to me.
Makes sense to me.
But Weist didn’t play Williams’ conservative ex-wife. She played Gene Hackman’s (conservative politician) current wife. Williams was never legally married, but he once had sex with a woman, who bore him a son.
28a: Who played her, and what else was she in?
Hee! my bad!
28a
Christine Baranski?
Yep.
Might as well wrap things up by answering these.
19a: William Hung and the Hung Jury
Last bonus: In an episode of Drew Carey, Drew, Oswald, and Lewis were all dating the same woman. She was played by Diane Farr, Numb3ers’ Megan.
In another episode, Drew and friends sang and danced Time Warp.