''Superhero Movie'' aims to topple ''Horton''

Can ''Superhero Movie'' succeed this weekend where all others have failed, unseating two-time champ ''Dr. Seuss' Horton Hears a Who!'' from the top spot at the box office?

Man, the voices of Jim Carrey and friends just won't shut up! I'm talking, of course, about Dr. Seuss' Horton Hears a Who! The movie has earned nearly $100 million in less than two full weeks of release, and it shows no signs of slowing down — not with an utter absence of rival kiddie fare in the multiplex.

Which spells trouble for this weekend's four big openers (the comedies Superhero Movie and Run Fat Boy Run, and the dramas 21 and Stop-Loss), all of which are aimed at the same general young-adult crowd. Among them, I suppose Superhero Movie stands the best chance of bumping Horton out of first place. Then again, don't be surprised if these four films just beat up on each other while Theodor Geisel's cuddly elephant cruises down its clear path to victory. Okay, before I throw another metaphor into the mix, let's move on to the picks.