Pity the nonfiction author -- while plenty of novels that are only marginally successful get optioned for film adaptations, you can write a runaway best-seller that provides practical advice on love, gardening, or auto repair, and wait until doomsday before anyone buys the movie rights. Well, nonfiction writers, you have a new hero: comedian Steve Harvey. In 2009, Harvey published the book Act Like a Lady, Think Like a Man
, in which he offered women strategic relationship advice on how to deal with the men in their lives, and after the book became a huge success, he figured out a way to bring it to the big screen. Think Like a Man
is a romantic comedy a...