Cosmopolitan Cabaret opened with the September 2008 to September 2009 run of “Forever Plaid,” which remains the biggest success as a show. “Forbidden Broadway,” which opened Friday night, may just rival “Plaid.” There are lots of similarities. Both have talented creators, lots of hysterically funny scenes, songs, costuming, props and more. "Forbidden Broadway" creator and continuing writer, Garrard Alessandrini, aims his sharp pen at mostly easy targets but in incredibly funny ways. You may never have seen “Annie,” “Les Miserables” or “Lion King,” but are still very aware of them and lots of other Broadway shows through popular culture. Both have four very talented actors, who understa