Like, yes, Fight the Power was impactful because it's in the opening credits of Spike's movie... but as a PE fan, I'd pick a handful of songs I like better. (Black Steel in the Hour of Chaos, probably)
Real music fans like us want to discuss the quality of a tune... we've read and reread the supposed impact and place in time of a hit single, or what not.
It's like putting a pair of handcuffs on cultural dissertation... in 50 years, we'll *have* to discuss Beyonce and Jay-Z and not all the other great r'n'b/hip-hop artists from the past couple decades, because RS and Conde Nast and TimeWarner have deemed it so. the snake eating itself...
us nerds will still be in the back pages of the internet remembering the stuff we actually liked, as opposed to the collateral we were exposed to via megaphone, billboard, and the VMAs.
Again, these lists are not for fans of music. We'll always be confused by them... I wonder if there are actual fans of music behind these lists and not marketing focus groups.