Months after the October announcement that Hulu was launching its beta version on their official site, as well as partner sites, such as AOL, Comcast’s Fancast.com, MySpace and Yahoo!, Hulu decided to go public starting Wednesday; there is a trick however: it is still limited to U.S. users only for now.

In an attempt to bring the best selection of premium video content online, Hulu announced deals with Metro-Goldwyn-Mayer Studios Inc. and Sony Pictures Television, as well as World Wrestling Entertainment, Smithsonian Networks, the National Basketball league Association and the National Hockey league.

“We’re excited to bring a wide selection of popular content to fans, on-demand and free – from full episodes and clips of hit shows like Heroes, House, The Office and The Simpsons, to feature films like The Blues Brothers and Sideways,” said Jason Kilar, chief executive officer at Hulu, after announcing the beta release.

In the four months since it’s been “on”, Hulu managed to conquer all classes of users, by covering a large area of content, from full-length old and new TV shows, to sport videos and movies. Big challenge for Google YouTube? It remains to be seen how big of a challenge, now that it is finally becoming available to users all around the United States.

Another thing Hulu is counting on is the ads feature, aiming at both advertisers and viewers, by offering the option to choose to watch more ads from the advertisers on the site: “From the advertisers perspective, it can’t get any better,” Forrester Research analyst James McQuivey said, as quoted by Reuters.

Hulu is an online video service set to offer its users a ‘premium’ selection of hit shows, clips, movies and sports, with a content provided by NBC, FOX, MGM, Sony Pictures Television, Access Hollywood, Bravo, E! Entertainment television, Fox Reality, Gamespot.com, National Geographic, World Wrestling Entertainment and many others.