My Best, Influential Albums and Best Songs

So I have been in a heated debate with my old buddy Chris about what was the best song of the 1990's. Chris and I have of course agreed to disagree( for now) but in the interim, the discussion has prompted me to take a look at the 60's, 70's, 80's, 90's, and 00's and pick my favorite album, the most influential album, and the best song of the decade. I decided I would blog about it and see everyones reaction. By no means am I the definitive answer to great music, but I thought it would be interesting to see what others reactions would be. Chris may get a little pissed at me but am going out on a limb