In "Knocked Up," Seth Rogens' cast of neer-do-well pals have a money making plan: a Web site that catalogs nude film scenes. Looks like Hulu's got the same idea. Last week we pointed out that Hulu users were younger (32) and more male (two-thirds) than we'd previously thought. A sharp-eyed commenter, "Jonathan," posited a theory why: Actually Hulu is being used by these 'young men' to watch porn/nudity. If you check the most popular movie ...