Some commentators on Fox made it into a political issue...but I think it was highly undignified for Michelle Obama to go "booyah" on national television before Obama's acceptance of the Nomination. Can you imagine Hillary Clinton going "booyah" to President Clinton the night she won Pennsylvania by "double digits?" Michelle Obama is supposed to be setting her image up for First Lady...and all she has right now is "Yeah, I've Got a big Mouth" "First time in my adult life I'm really proud of my country" and "Booyah"
Michelle Obama lacks diginity due to giving her husband "dap" and an excited response? The fact is, Michelle Obama is an intelligent and accomplished woman who has apparently not lost touch with social practices of her youth. Dap is perfectly normal and acceptable in the Black community - if it was unknown to others until that moment - high time they learned a little something about different cultural practices within the U.S.
Regarding, the 'booyah', so what, lets examine the "dignity" and comportment of the other candidate spouses, shall we? Cindy McCain had(s) a drug problem and steals, and Bill Clinton, well there are several issues, but lets stick with whips his dick out at the slightest opportunity - I'll take the booyah.
They know politicians who put in work, time and effort. Voters know these Politicians by their investment in improving their lives. People don't know Obama because he's been a U.S. Senator for a hot second outside of running for President and hasn't completed a term. People don't know Obama because most of his legislation from Illinois came in his final year as a State Senator when he was planning to run for higher office. People don't know Obama because most of what he does, he seems to do for political gain. People get to know you from what you do, and then trust who you are. The "breath of fresh air"...is relatively unknown.
People learn to "know" their candidates through image, familiarity, an undefined public persona created by professional political communicators, and "tell me what I want to hear" sound-byte responses in media. That isn't knowing.
Obama is not, by your definition, "unknown", voters can use his state and federal senatorial experience to draw conclusions from his record and the perception his constituents have about the betterment of their lives.
Unfortunately, they won't, rather, many prefer talking points regarding "fist bumps" and misinformation about his religion, over, say, FISA, which is much more important and a reason why I won't vote for him.