Seriously, do rock anthems get any better than this? "Sweet Child o' Mine" by Guns n' Roses should hold a special place in everyone's heart. Appetite for Destruction is the great uniter.
I'm also aware of three cover versions, one by Sheryl Crow that makes me wish that I could be capable of unhearing things, one by Taken By Trees that I'm cool with and a third by Luna that I imagine would make for perfect accompaniment while watching fireballs rain from the sky as the coastlines slip into the ocean. It's apocalyptic, baby! Sounds good to me.