Adele is . The first time I heard "Rolling in the Deep" play on the cable music, I was putting away dishes and broke a plate because I swear my heart stopped (or least my brain did!). I couldn't speak for 5 minutes after hearing "Someone Like You." My heart was racing and my stomach was in knots. If there's another album this decade as good as 21, I'll consider myself lucky!
Adele. (But also VIETgrl for going against the grain!)
For me, Set Fire to the Rain and Rumour Has It are not as exceptionally once-in-a-lifetime great, but they give me hope that Adele can be more versatile.