lots of great basslines but how could y'all forget "For The Love of Money" by The O'Jays or did I just miss that. By the way the bassline for My Girl is often mistaken for the guitar lick not that all Jamerson's basslines aren't great. As for other great basslines I don't know if these are as recognizable by non bass players but all the lines of James Jamerson are great... how about Bernadette by the Four Tops and Don't Mess With Bill by The Marvelettes as just two examples. and add these non Jamerson but great bass groves.....
Personally - Artist Jackie Moore not sure who the bass player is
What Is Hip - Tower of Power (Rocco Prestia)
Kinky Reggae (live version) - The Wailers (Aston "Family Man" Barrett)
Until You Come Back - Aretha Franklin (I think it's Jerry Jermott on bass)
A Nickel And A Nail - O.V. Wright (good example of Memphis Willie Mitchell production bass, Leroy Hodges)
and if you can find this one it's worth the listen....All By Myself - Daryl Hall (from the Can't Stop Dreaming Album,not sure who the bass player is but his tone and playing are fat and sweet)
now these might not be the most technically difficult basslines but if you listen to them they all have one sweet groove. and yes they are all kind of very old school but then so am I, LOL oh and most of them are not that famous either but if your a bass player you should give em a listen.