I love Alice in Chains. They are probably one of the most truly underrated, and greatest, bands of all-time. They were pretty unpopular in Seattle when they came out because they werent very punk and they didnt have indie roots... and they lived out the rockstar fantasies... but as far as the music they produced, it's tough to beat. Facelift is probably their best full-length album.
My favorite songs of theirs are Heaven Beside You, Got Me Wrong, Real Thing, Sea of Sorrow, Don't Follow, I Stay Away, No Excuses, God Am, A Little Bitter, and The Killer is Me.
I do like DuVall in Chains, though not as much. The single released earlier this year, "Hollow", is great.