That smoking ad is HILARIOUS. It's obvious he's not really running for president and realizes the whole thing is a joke. I mean, come on...just listen to that song and watch Cain's goofy smile. I love it.
I disagree. There's no question that Herman Cain, the politician, is a joke, but his candidacy (at least in Herman's head) is very serious. Watch his interviews. Listen to his speeches. The guy takes his positions on economic issues very seriously. He becomes visibly agitated when interviewers challenge his opinions. The other day he lashed out against Karl Rove for "deliberately" trying to "smear him."
He knows nothing about politics and thus lacks the common sense to run a serious campaign, but I think it's due more to naivety and ignorance than anything else.