In so far as ... "something so depressingly mainstream" ... which would be one of the main things I have against their output. Still, horses for courses and all that, I'm just not a horse for that course. (
But hey I'll jump in the 'Top Albums' fray, but I've seen High Fidelity and can sympathise with the impossibility of compiling an 'all time top 5'
But anyway, some off the top of my head... (no particular order)
Stone Roses - Stone Roses
Blur - Parklife
Ride - Going Blank Again
Scott Walker - Scott 4
Divine Comedy - Fin de siecle, or maybe Cassanova
Muse - Origin of Symmetry
Whatever, all depends on what mood I'm in I guess.