RIP RJD
I'm a huge Foo Fighters fan. (though I always hated Nirvana for some reason) I LOVE the Concrete and Gold album, it has kind of a 70's experimental rock vibe to it. They're also by far the best live act I've seen. Dave and the boys really enjoy playing and it shows in their performance.
I love Pink Floyd as well.
I am a total sucker for acts with a strong female lead as well. Halestorm (awesome live), Within Temptation, some of In This Moment (they're hit and miss for me), and others.
Also The Final Countdown covered in the greatest possible way: