Let's play Things in Common

[MrBogosity]

Well, it's been a week, so I assume people have given up on the rest:

1. G.M., H.M., C.M., Z.M., G.M.

The Marx brothers--Groucho, Harpo, Chico, Zeppo, and Gummo.

2. Red, Black, Dead

Seas: the Red Sea, Black Sea, and Dead Sea.

3. Jobs, Nicks, Burns

Steves: Steve Jobs, Stevie Nicks, and Steven Burns.

4. U, D, T, B, S, C

Quarks: Up, down, top, bottom, strange, and charmed.