Soundgarden!!!! One of the best bands in their day and after their comeback probably going to continue that legacy. They broke up on tour in '97, I believe, and their first new album came out in '12 and it was great. I dont know many bands who can make such great music right off the bat after a nasty breakup and a long hiatus. King Animal was phenomenal... By Crooked Steps, Been Away Too Long, A Thousand Days Before, and Rowing are some of their best songs ever, IMO, and I was lucky to catch them at Terminal 5 in NYC this past January and they put on an amazing show. They played 27 songs, and they played plenty of old stuff, as well as new stuff.
Chris Cornell went in an... ahem... interesting direction after Soundgarden, but his work with Soungarden still makes him legendary, and he seems like a really classy dude.