God Knows from that anime is a great song, I listen to it several times a year at least. Actually I heard a cover of it just yesterday (by chance, autoplayed on youtube). Some of my favourite guitar. I praticed that song on bass a couple times last year.
Yeh I got introduced from dbzf too, because of Rogue being into it. I don't get the big deal about the show really, but it's nostalgic cuz it's from that dbzf era and when I was quite new to anime.