The Max Lange Attack
The Max Lange is an opening that has been serving me very well in the past. It is extremely sharp and devastating in blitz games. As an approximate estimate, I would say I've won 10 games with this for every loss. This is actually surprisingly solid even in Classical time controls.
Black's other move, 3,...Bc5, may lead into some other interesting positions, all with a truckload of attacking ideas for white.
The last variation is probably, in my opinion, one of the best for black.