20th Century Studios has unveiled theatrical trailer for Diary of a Wimpy Kid (2010). Meet the kid who made “wimpy” cool, in a family comedy based on the best-selling illustrated novel "Diary of a Wimpy Kid" by Jeff Kinney, the first in a series that has thus far sold 24 million copies. "Diary of a Wimpy Kid" chronicles the adventures of wise-cracking middle school student Greg Heffley, who must somehow survive the scariest time of anyone’s life: middle school. Watch theatrical trailer now!