Roundabout isn't obscure. It's all over classic rock radio stations.
I wasnt talking about roundabout althought I think their are better basslines played by jamerson on simple pop records, and we both a classic rock station is the only place you would hear that song, I mean things like the king crimson line.
Thela Hun Ginjeet isn't that amazing of a line by Tony's standards also. This is how I'd do the list (again):
1. Good Times - Chic (Bernard Edwards)
2. Thank You Falettinme Be Mice Elf Agin - Sly and the Family Stone (Larry Graham)
3. Money - Pink Floyd (Roger Waters)
4. Roundabout - Yes (Chris Squire)
5. Another One Bites the Dust - Queen (John Deacon)
6. N.I.B. - Black Sabbath (Geezer Butler) (First major bassline with effects)
7. Under Pressure - Queen (John Deacon)
8. London Calling - The Clash (Paul Simonon)
9. Super Freak - Rick James
10. Taxman - The Beatles (Paul McCartney)
11. Whipping Post - The Allman Brothers Band (Berry Oakley)
12. Schism - Tool (Justin Chancellor)
Also it's not in my own Top 12, but I'd probably put "Caught in a Mosh" by Anthrax and "For Whom the Bell Tolls" by Metallica in the Top 50 or 60.