Being in a Mod/Northern Soul/Ska band with bandmates and a soundman that like the bass prominent and up front I really am in bass heaven.
It's hard to just pick three but let's go with The Jam (Bruce Foxton), The Who (John Entwistle) and The Specials (Horace Panter), but with the likes of The Small Faces, Secret Affair, The Lambrettas, Spencer Davies Group etc thrown in the mix, not to mention all the Northern Soul stuff, which much like Motown and Stax, generally has epic basslines it's hard to pick just three.