Is it ever acceptable to use an exclamation mark AND a question mark, like this!? Or am I really pushing my luck… and my grammatical failings?
Uh, oh…the Starving Artist! It’s spreading! And using the Dope as its transmission vector!
When it’s a rhetorical flourish, intended to convey incredulity.
*“Dad, I’m thinking of voting for McCain.”
“You’re WHAT?!”*
Yep, you’re right. I knew there was a 50% chance I was wrong. Luckilly, that particular email just got sent to my “nutjob” aunt who will not know the difference, and not to my smart grandma who would. If it was going to grandma, I’d have checked.
BUT…thanks to you pointing that out I’ll not make the same mistake again! 
Somebody here once called that Pooh-speak, as in Winnie The.
You’re quite welcome. Please join me in reining in those who suggest that candidates should “reign in” their running mates.
The above is apropos of nothing in particular. I’ve just been itching for an opportunity to mention it.
Just to muddy things up however, counsel can be a noun, e.g. Counsel for the Plaintiff.
I would advise these people to be careful what they pray for.
“On that day, many will call me Lord… and I will say 'Get away from me! I never knew you!.” — Jesus