A Black Circle

I'm not much of an anime watcher, but I thought "Baccano!" was really good.

I was thinking Soul Eater

Oh crap I loved Baccano!

Heard soul eater was decent but baccano! was brilliant. Short as well so you don't need to spend too much time finishing it : P

Also watch the dub version for this. Usually subs have better acting but this ones good