Ten years ago I might have answered this question with 'Dookie' or 'Nimrod' but now I'm almost certain that 'American Idiot' is no doubt my favorite Green Day album. The first time I seen these guys (live) was exactly five years ago today- American Idiot Tour at Conseco Fieldhouse in Indianapolis. Who could go wrong with choosing a rock opera album? It's pure genius.
I was hooked on Dookie, then Warning and then American Idiot. You can't really go wrong with Green Day... they are pretty fantastic. Sometimes if I get attached to an album it sticks for a while and the songs get stuck in my head forcing me to listen. lol