I'm not sure how exactly this happened... but I have become a huge fan of classic rock. Guitar Hero may have had something to do with this. But there's also a realization that the music I loved growing up -- alt rock of the early 90's like Alice in Chains, Nirvana, Pearl Jam, Smashing Pumpkins, etc really owe in large part their style and heritage to the rock greats.
Pink Floyd. Led Zep. Clapton. Hendrix.
Enjoy. Time, and Money. The two things in the world of which we could all use more.