Not sure I could give a definitive personal favourite. There's a few that spring to mind Blue Oyster Cult's 'Don't Fear The Reaper', Kinks 'You Really Got Me', Creedence 'Round The Bend' but right now I'd go for Taste of Honey 'Boogie Oogie Oogie' made all the better by the fact that the 2 bass players in that were the women singers.
And Felix 'Don't You Want Me' is pretty compelling with a bassline to die for and this effort by Thugf**ker is superb. Just wait until it kicks in properly.
And an ongoing dispute about who played it. Could have been Leroy Taylor, Eddie Watkins, James Jamerson or Bob Babbit. Think it's been narrowed down to James Jamerson or Bob Babbit (and Bob claims not to know !)