Foo Fighters, Weezer, Cage the Elephant: Fighting for the Future of Rock

In the more than 20 years since Nevermind (no, it's not a feeling - you are old), Dave Grohl has progressed from punk-rock insurrectionist to magnetic-tape preservationist, with time in between to become a human Muppet. There are so many reasons to love Grohl, at this point you wonder if...