Few stars working today enjoy the same degree of near-universal adulation as Joseph Gordon-Levitt, now nine years out after ending his acting hiatus and all grown up from his stint on TV sitcom 3rd Rock from the Sun. His latest film, Don Jon, a modern riff on the licentious legend of classic literary anti-hero Don Juan, may best evince how far he’s come from his Tommy Solomon salad days; here, he not only serves as leading man, but as writer and director, tasks he’s previously taken on with short films (produced by and distributed through hitRECord, the studio he and his brother founded in 2004) but never with a feature-length effort.…