So, what are your favourite classic rock songs/albums/artists/bands?

I myself am partial to http://www.youtube.com/watch?v=Oik6qbPDi88Lhttp://www.youtube.com/watch?v=9Q7Vr3yQYWQ (one of the few overrated songs that lives up to the hype) and that one song from http://www.youtube.com/watch?v=SSR6ZzjDZ94.
I'm not really sure what is supposed to define classic rock, but I guess it is just rock that sounds like it is from the 70's?

also how cool is this video: http://www.youtube.com/watch?v=3x9kW9b3zkw&feature=fvsr