Movie stardom might be defined as the ability to play someone who's too good to be true and make that person seem just typical enough to be you. James Van Der Beek has that skill down as if born to it in the slickly enjoyable ''Varsity Blues.'' It's a conventionally plotted sports melodrama, with some flashy gridiron showdowns, most of them scored to jackhammer alterna-metal (yes, this is an MTV Production), as well as some winky bits of adolescent sex play. But the movie is also brisk and wholehearted and smarter than you expect, and it gives Van Der Beek, who each week declares his mastery of pop trivia sensitively as the lead romantic moper of Dawson's Creek, a chance to break out of his soft shell and show some sinew and swagger.
I'm not making predictions, but I couldn't help but think back to another formulaic yet likable high school football movie -- ''All the Right Moves,'' the 1983 sleeper in which Tom Cruise proved he could do more than boogie in his BVDs. Cruise made his shoulder-pad stud vulnerable and life-size, a true guy, and Van Der Beek does the same thing here. He gets you to believe in a character as idealized as Jonathan Moxon, a.k.a. Mox, a young Texas quarterback who can toss a football through the eye of a needle at 40 yards, yet who's so noble and multifaceted that he sits on the bench during games, stealing glances at a volume of Kurt Vonnegut hidden in his playbook.
Mox's lofty attitude doesn't win him any favors with the coach, Bud Kil-mer (Jon Voight), a drawling search-and
Stardom, of course, means perks. At a convenience store, the clerk offers Mox a six-pack, and the injured quarterback's scrumptious groupie-in-heat girlfriend tries to seduce him by putting on her whipped-cream bikini. ''Varsity Blues'' has its shallow gags and cliché characters, but it also creates a vivid portrait of a small-town community in the grip of an obsession. These boys' fathers played for Kil-mer too, and they've never relinquished their lust for glory. There's something at once touching and fanatical in
the way they're now living
through their sons.
The emotional hook of ''Varsity Blues'' is the way it presents Mox caught between
his own sane vision of athletic elation and the revved-up dreams of victory his new status as a hero forces him to confront. Mox doesn't reject stardom; he grooves on it (who wouldn't?). He's tempted as hell by his new role as high school demigod, but he knows in his gut it's rooted in a corrupt fixation on winning at the expense of everything else.
The director, Brian Robbins, has a knack for staging inspirational moments at low ebb, and he brings out the best in his actors. Paul Walker, as the sidelined quarterback (a victim of the coach's shoot-'em-up-

