My top 3: Beatles, Beach Boys and Doors...in that order - for me.
Some groups off the top of my head:
Airplane, Cream, Frigid Pink, Blue Cheer, Steppenwolf, Yardbirds, DC5, Kinks, Beau Brummels, Neil Young, Hermans Hermits, Animals, Hendrix, Butterfly, Blind Faith, Who, Canned Heat, Donovan, Zeppelin, Blues Magoos, Chambers Brothers, Standells, Grassroots, Association, Great Society (pre Airplane), Status Quo (I think they were in the 60's), Sabbath (pre first album).....
Some groups off the top of my head:
Airplane, Cream, Frigid Pink, Blue Cheer, Steppenwolf, Yardbirds, DC5, Kinks, Beau Brummels, Neil Young, Hermans Hermits, Animals, Hendrix, Butterfly, Blind Faith, Who, Canned Heat, Donovan, Zeppelin, Blues Magoos, Chambers Brothers, Standells, Grassroots, Association, Great Society (pre Airplane), Status Quo (I think they were in the 60's), Sabbath (pre first album).....