Your least favourite....

The appendix - probably don’t need 'em, and they burst at inconvenient times

LF piece of organ music?

The cavalry charge, at baseball games

Least favorite hooligan

skinheads

least favorite astronomical event

Gamma-ray burst that destroys all life on Earth

LF thing to see on the evening news?

Trump trumps that one.

LF Vice-President?

Dan Quayle - callow, conservative, mediocre, unready

LF now-dead monarch?

Henry VIII - beats out even Trump for self importance and hypocrisy

LF Agatha Christie story?

I only know of Murder on the Orient Express, so that one.

LF Sherlock Holmes story

A Study in Scarlet has too much Mormon stuff and not enough Sherlock Holmes.

LF sf novel?

Does Terry Pratchett count?

LF WWII airplane

The Brewster Buffalo, which was ugly and obsolete: Brewster F2A Buffalo - Wikipedia

LF WWI airplane?

The RAF BE-9 “Pulpit.” Let’s put the gunner in front of the propellor–what could possibly go wrong?
Least favorite character that has ever appeared on The Big Bang Theory?

No. Thou hast committed blasphemy.

Leonard’s doctor girlfriend who moved in with him

LF Star Trek villain, any series

Probably the Pakleds, if you can even call them villains.

LF advice you have received?

Listen to your head, not your heart

LF song by The Who

You Better You Bet
oo wooo

LF Grammy-nominated song

“Live and Let Die” by Guns N’ Roses

and the next category is?

Sorry, mate.

LF candy you’ve ever tasted?

Horehound drops

Least favorite pattern on clothing (dots, plaid, paisley, etc.)