American Idiot, by Green Day (2004): I never thought I'd actually buy a Green Day record. I mean, really, punk is just about the anti-prog, right? It's just not my thing. But this album go so much press it was hard to avoid. I heard interesting rumors. It's a concept album. It's got a couple of "epic" tracks. So, several years after it came out, when I came across a used copy, I went ahead and snapped it up. I'll say this - it's worth every bit of the $4 I paid for it. Granted, my expectations were incredibly low, but I was pleasantly surprised. Not enough to dive deeper into the back catalog, of course.