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.

Paul Walker and Tyrese Gibson in 2 Fast 2 Furious2 FAST 2 FURIOUS

How did this happen? How, in a summer chockablock with megahit wannabes of all sorts, did the major studios agree to get out of Universal's way and allow 2 Fast 2 Furious to be the only new release of the June 6 weekend? Are the powers-that-be at Universal holding compromising photos involving the rival studio heads? Are they holding their pets hostage? Why, for the love of God, are Universal's competitors letting this terrible movie become a hit? Granted, the opening five minutes are fun, and there's a squirmy torture scene involving a rat attempting to burrow through a man's stomach.

Jennifer Aniston and Mark Wahlberg in Rock StarROCK STAR and THE MUSKETEER

If you were to guess based solely on their previews, you'd probably imagine Stephen Herek's Rock Star to be a kitschy, affectionate look at heavy metal in the '80s - like This Is Spinal Tap played straight - and Peter Hyams' The Musketeer to be a brisk reinterpretation of the Alexandre Dumas classic with a martial-arts bent - Crouching Tiger, Hidden D'Artagnan.