I'm surprised by the lack of votes for Sardinista!
But the debut is what got me into punk and music all together. One of the angriest albums ever that isn't terrible (any metal band can make an angry album).
London Calling is a very, very strong album and I could easily see it being voted the best. London Calling I always considered an "Art/Punk", still sounding quite angry but the whole album was a diverse and intelligent record. Clampdown and the title track are my favorites. Both are in my top 25 albums.
