--> Desperate guesses below.
So, I guess some hints are in order.
1) oceanographer
(think big movie by big director, then think parody)
--> "Titanic" comes to mind, but that wasn't parodized, was it?
2) historians
(multiple correct answers, the highest charting one is by someone who shares my given name. twice.)
--> Twice? Marky Mark???
4) sociologists
(band led by another guy who shares my given name, this song charted at #75)
--> Mark Mothersbaugh and Devo?
5) philosophers
(Beej & poc & I like this band more than the rest of you guys, this song charted at #76)=