No one said it was you. But what's it about? Because I've seen the anime related ones and boy are they HILARIOUS.
"Has to be Baccano!'s. Awesome Jazz and a cool old American TV-show type intro.
Gunslinger Girl. Not just because The Delgados are an amazing band and the song fits beautifully with the mood of the show, but because I love when European bands do anime intros. Which doesn't seem to happen.
Also gotta throw in a nod to Baccano for that awesome jazzy tune.
And also gotta give props to One Outs for the nice musical progression from soft to hard soft.