Bill Bubble Guy said:
8. What does Andrew Lloyd Webber excel at- making movies, writing musicals or singing opera?
11. Would a neurotransmitter be found in the brain, a jet aircraft or radio station?
19. What does a prima donna do- dance or sing?
20. On what part of her body would a woman wear a tiara?
24. What is the medical term for "loss of memory"?
Wow cool.. thanks for starting to put the answers. They are really interesting!
Ok, if you don't mind, I think I'll answer just a few that I know, too!
8. Writing musicals
11. The brain
19. Can I guess and say sing?
20. Head!

24. I'm gonna say amnesia. I'm not sure if that's the answer they're looking for, though.
I also did know Charlie Sheen is Emilio Estevez's brother and I was pretty sure about red for Pizza Hut's roof, too, hehe.