It really is a testament to the writing talents of Judd Apatow that he could take such a simplistically "sitcommy" concept like "slacker slob unexpectedly impregnates an upwardly-mobile young hottie" and turn it into such a warm, witty and frequently drop-dead hilarious motion picture. Clocking in at well over two glorious hours in length, Knocked Up is yet another brilliant little winner from the man who brought you The 40-Year-Old Virgin, Freaks and Geeks and Undeclared -- thereby proving that network television's loss is cinema's massive gain.

Seth Rogen, generally known as a scene-stealing "support" performer, delivers a star-making turn as Ben Stone, a pot-smokin' web designer who shares a house with four over-baked buddies. But when a chance encounter with a girl way out of his league turns into a night of drunken sex, Ben discovers that he's about to be a daddy -- and to say that the guy's unprepared for the responsibility would be a stunning example of understatement. As the beautiful Alison Scott (Katherine Heigl) grows ever rounder, moodier and more hormonal, Ben turns from a funny-yet-irresponsible pothead into a very funny-yet-slightly more responsible pothead. Meanwhile, Alison's sister and brother-in-law struggle with their own marriage and Ben's buddies struggle with the idea that one of their crew has grown up.