Of course popular TV shows now have vibrant web sites, but Entourage (HB0) demonstrates a fine grasp of Web 2.0 principles with their new web-based promotions. Fans get to play the roles, win prizes and share the fun with their friends.

The antithesis of the Subservient Chicken is Entourage agent Ari Gold and you can be grilled by him just like the one of the show’s stars at http://interviewwithari.com. If you play long enough, he’ll say something that will cause you to burst out laughing.

Over at MySpace, Entourage is sponsoring a competition for fans to build their own entourage using the MySpace tools. Two winners will be selected, one by a panel of judges and one by the fans. Prizes, of course, include going to Hollywood and acting like a big shot. Here’s a sample entry that was G-rated last time I looked.

New York Times: Using the Internet, HBO’s ‘Entourage’ Finds New Ways to Hook Its Fans, 2006-June-5, by Lisa Miller (purchase required)

Deep Focus, the Brooklyn-based online marketing agency that works frequently with HBO, geared the campaign to the show’s core fan base of young, Internet-aware viewers….