Steve Carell, Paul Rudd, Romany Malco, and Seth Rogen in The 40-Year-Old VirginTHE 40-YEAR-OLD VIRGIN

Considering the film's title, this might sound ludicrous. But in The 40-Year-Old Virgin, Steve Carell, playing our hapless hero Andrew, gives what might become a legendary comedic screen performance.

Mark Ruffalo and Jennifer Garner in 13 Going on 3013 GOING ON 30

When you watch a body-switching comedy such as Big or Freaky Friday, you know immediately that the movie is going to require a huge suspension of disbelief; these are comedy fantasies, after all, and bitching about logic and realistic plotting is the surest way to kill your good time.

Jamie Lee Curtis and Lindsay Lohan in Freaky FridayFREAKY FRIDAY

Everyone I know has enormous fondness for the 1976 Disney comedy Freaky Friday, wherein mother Barbara Harris and daughter Jodie Foster switched bodies and discovered, on one very strange day, how the other half lived.