MIXED MEDIA : <i> A occasional look at pop-related books, videos and laser discs that are of special commercial and/or critical interest. The rating system: five stars (a classic) to one star (poor). </i> : * 1/2 “NEW JERSEY--THE VIDEOS” Bon Jovi <i> PolyGram Music Video laser disc</i> ($24.99)

Not even the wonders of laser disc picture and sound quality help bring these seven pedestrian videos to life. The inane backstage patter that links the videos doesn’t help much, either. Bon Jovi’s melodic hard-rock is so hollow and their videos so unimaginative that you don’t expect the band’s fans to be music or cinema majors, but that’s no reason for PolyGram Music Video (which has also released “New Jersey” in videocassette) to suspect the group’s fans didn’t take enough math classes to recognize that the disc’s running time is a full 18 minutes short of the package’s claim of “approximately” 60 minutes.