best songs ever made?

how about some Manson

http://www.youtube.com/watch?v=OY0536g_6Wc

http://www.youtube.com/watch?v=bP8eNye4J_M&feature=channel

and some Metalica

best opening riff ever!
http://www.youtube.com/watch?v=bMW0_XxKdzs

http://www.youtube.com/watch?v=Q7C90sLh5Ok