Who and who?! Over at the IMDb boards, we have what I created/coined as the Betty White option. It's at best a neutral option to a choice where neither option can be considered. My answer is Betty White.
Ken Burn's Baseball or Civil War documentary miniseries?
Tap dancer. They eventually will go to sleep, (unless it's a tap dancing robot).
Getting a beat-up, scuffed, and broken/unplayable guitar owned by Muddy Waters (not financially worth anything) or a brand new guitar (valued at $500)?
Snap, Muddy Waters hands down, it's a religious experience. (Paul Reed Smith has a workroom about 10 - 15 miles from me, he would love to restore that guitar)