please don't. Its so old. its been done.

Just because the '!' signifies an exclamation, this doesn't necessitate that your music will be that little bit more edgey or exciting because. Observe:

Power Up!
Hey! Robot!
Die! Die! Die!
You say party, we say die!

See? Disgusting. It reeks of deperation to attract 14 year old scenester girls, but their love will be transient, and you're going to feel really really uncool in about 7 months (if you don't already)