That song is called 'Money'. Booboo, everybody else has put this at the top of their list and you didn't get it - what's happening, are your powers waning?
Anyway i would recomend Meddle, Animals and Wish You Were Here for their most underrated works...But the best recomendation i could give would be Dark Side Of The Moon, if you havent heard it already that is, if you havent, you surely must.
Wish you were here gets a huge huge bump for me because of the line "did they get you to trade a walk on part in the war for a lead role in the cage" (Im going off the top of my head so it may not be exact)
^very true. A lot of times it's their popular tracks that draw you to them until you hear them over and over way too much (another brick in the wall pt.2, stairway to heaven) and eventually listen to their b-sides and lesser known stuff and take more of a liking to it. That's how it works for me anyways
My dear, if you read my first post correctly, you would of seen that I was asking for reasons to get into them. I also stated that I neither liked nor disliked them at this stage.