Two of my favorite scenes are from The Maestro:
1st: Kramers interpretation of "Flight of the Bumble bee"
2nd: George's scene when he is talking to Jerry about why security guards don't have chairs. Jerry says something like they shouldn't sit down, what if someone comitted a crime.... George says "how long does it take to stand up, look: CRIMINALS, boom I'm up, stop it, stop it, stop it..."
These two are hilarious!