G1 - Black Sabbath - Nothing to say here, Beatles are one of the most important bands in the history of modern music, but so is Sabbath in being the most influential hard rock/metal band in history.
G2 - Bad Company - I could go either way here, love both bands.
G3 - Van Halen - I'm sure that Rush is spanking VH's asses right now. Too bad.
G4 - Queen - I'd honestly take Zeppelin over Queen, but I know that LZ has got to be kicking Queen's ass in this one