I like:
- just about anything Geezer played with Sabbath
- Dennis Dunaway, especially on "Gutter Cat vs. the Jets", but plenty of others also
- Jamerson (Bernadette has always been my fave)
- Flea on "Higher Ground"
- "Superstition" (all versions are cool but BBA stands out for me)
- Larry Graham on "If You Want Me to Stay" & "Let Me Entertain You"
- Ronnie Wood w/JBG on "Around the Plynth" & "All Shook Up"
Probably a million others but I'm gonna quit for now.