Tibi PuiuHard rock musician [tag]Jack Black[/tag] and rapper [tag]Mos Def[/tag] are the staring cast in the uber comedy flick of the summer “Be Kind Rewind”. I just love the premise of the movie: Jerry (Jack Black) is a junkyard worker who tries to sabotage his local power plant, because he thinks it’s harmful, but gets magnetized in the process; walks in his buddy Mike (Mos Def) video rental shop and accidentally erases the content from all…