Do people remember "Wholly Moses?" Dudley Moore vehicle from the early-80s? It's not wonderful - fairly transparent attempt to do a "Life of Brian" for the Old Testament...
The premise is that Moore is a random Exodus-era shepherd who happens to be around the corner from where Moses is recieving instruction from the Burning Bush and goes off on an adventure assuming that the voice of God was talking to HIM. It's part of the weird subgenre of mildly-amusing "Bible Spoofs" that seem aimed at Sunday School kids just coming into their own irreverence (see also: "Year One.")
I was just thinking today that I'd love to see a variation on the "unimportant minor character who mistakes himself for the hero" gag applied to a spoof of movies like "The Help" - which has officially become a "sleeper hit" and thus an almost-certain Oscar/Globes/etc contender, whoopee - about a clueless white character who happens to be randomly around during certain key points of the early Civil Rights movement and assumes himself/herself (probably herself, given the subject under-scrutiny) to be some kind of "Hero of The Cause." To my mind, this sounds like a great vehicle for someone like Anna Faris in the lead - backed-up, of course, by a slew of black comics doing cameo character-riffs on famous figures (MLK, Malcom, Rosa Parks, etc.) Maybe get Morgan Freeman in to do a takeoff on "Miss Daisy." In the right hands, that could be hysterical.
What would it be called, though? "I'm Helping!" or "The Blonde Side" is all I can come up with off the top of my head.