Another great week for DVD releases including one of the summer's hottest hits. This weeks top titles include:  Iron Man [DVD review, Blu-ray review] - director Jon Favreau deftly juggles a smirking sense of humor, just the right amount of drama and emotional turmoil, and a heckuva lot of four-color superheroic action; Forgetting Sarah Marshall [DVD review, Blu-ray review] - the film is hilarious, poignant and well worth the exploration; and Adam-12 - Season Two [review]- a must-have for vintage TV fans.; Other releases of note include:  My Name is Earl - Season Three, Sports Night: The Complete Series 10th Anniversary Edition, and Taxi to the Dark Side [review]. Be sure to check out our DVD Talk Review Database for all the latest reviews including an entire section devoted to reviews of DVDs out this week.