…And never leave.

Well, that’s the scenario provided by jolly Carl DiOrio, the only box office prognosticator I have access to now that Variety has gone behind that pay wall. I certainly have little reason to doubt that Fox’s “Avatar” will experience a fourth weekend atop the box office pile, considering how the film has most definitely emerged as one of those rare demographic-spanning productions that becomes a self-perpetuating “must see” phenomenon. It’s already the tenth biggest domestic money-maker of all time at $380 million+ and I’m almost afraid to check the international numbers.

The last movie like this was “The Dark Knight,” which also ruled the roost four weekends running, but sometime tells me that the appeal of James Cameron’s movie might actually be wider over the long run in terms of attracting an older and less gender-specific audience. I could be easily be wrong about that but, considering how excellently the film has been holding up to now, even a relatively precipitous post-holiday drop still seems to promise another very hefty payday for Cameron’s epic spectacular.

Family appeal should never be underestimated at the movies. However, I have to admit that I’m a bit stymied by the degree of success of Fox’s “Alvin and the Chipmunks: The Squeakquel.” It’s just that I can’t imagine adults wanting to see it. Still, the movie came in third in a photofinish with Warners’ “Sherlock Holmes” last week (both made $35-36 million), and both movies apparently seem set for a similar repeat. Personally, though I wouldn’t be surprised if either film experienced a bigger than expected post-holiday drop. I found the opening hour of “Holmes” pretty dull stuff, despite a lot of running around and mucking about and it’s not like moviegoers don’t have some interesting options this weekend.

Indeed, unusually for the first post-holiday weekend of the New Year, we have two rather solid-looking entertainments on tap. Hopes are reasonably high for “Daybreakers,” to be a strong #4 for Lionsgate. It appears to be a clever, horror/sci-fi/action/satiric variation on an old Monty Python sketch, in which a world dominated by vampires  must deal with dwindling supply of delectably sanguinary humans. It’s an intriguing enough conceit to draw my attention despite the film probably having too much gore for my taste and having almost certainly way too much of leaden star Ethan Hawke for my preference. Still, a second billed Willem Dafoe can go a long way toward fixing that and critics are reasonably, though not ridiculously, positive, as in type O. Top critics are a leaning a hair negative, also as in type O, though it definitely has its fans.

Finally, there’s something about “Youth in Revolt” which, despite the fact that most people, including most critics, seems to like it well enough, makes people somewhat downplay its commercial possiblities — despite being part of the ever-popular genre once dubbed by Roger Ebert and Gene Siskel as “the horny teenager movie.” The plot is also a variation on Woody Allen’s “Play It Again, Sam” (a horny adult movie and stage play), which certainly worked well in its day and has more than little appeal to the nerd within all of us. Certainly, director Miguel Arteta (“The Good Girl,” “Chuck and Buck”) has a low key comic style that may not spell blockbuster though being based on a popular series of novels won’t hurt, I suppose.

Another side of Cera In any case, I don’t think we’ve seen the end of Michael Cera‘s box office appeal even if he’s inevitably been the subject of something of a backlash from those who argue he’s a one-comic-trick pony, though playing a dual role as his dangerously roguish alter ego might help there. Also, Cera’s memorably named costar, Portia Doubleday, is generating her own interest. That can’t hurt. The Weinstein Company could certainly use a bit of commercial help, right now. DiOrio is calling for the film to just break double-digits, but I wouldn’t be surprised by a surprise, especially given the lack of youth-friendly films and actually funny comedies right now.