#1
What are your guys' opinions on throwing an acoustic guitar into metal songs? I know some of it can be done kind of poorly, but some bands I think pull it off really well, like Obscura and Opeth (especially the Blackwater park album).

I think it adds a cool feel to the song overall, but I'm curious what you think.
#3
I generally enjoy it when metal songs have acoustic intros/interludes etc.