Much is being made of Howard Dean's "un-Presidential" yell after the Iowa caucuses. For comparison:
Is it Presidential to have a blowjob in the Oval Office? (Yet how many of us would vote for Bill Clinton again?)
Is it Presidential to vote for a war you know to be unnecessary and potentially risky, yet perceive as beneficial to your electoral prospects?
Is it Presidential to have amphetamine injections before your first summit meeting with Khrushchev? (Yet how many of us yearn for our perceived idealism of JFK?)
Not to mention how Presidential it is to allow lobbyists to write your legislation, to sell arms to terrorists to finance an illegal war, to ignore staff members who divulge the names of CIA agents, etc. that Rethugs have done?
Just to note that it's all relative.