You may have noticed some non-functioning guard booths inside Hollywood Studios and like most people, walked right past them. It's not like there is ever a guard in the booths or they ever impede pedestrian traffic, but these booths are part of the larger story at Hollywood Studios. You will find two booths to be exact, one near Star Tours and the other near the Great Movie Ride.
These booths serve as ceremonial barriers between Hollywood and the Backlot. The area of the Studios that includes Hollywood Boulevard, Sunset Boulevard and Echo Lake represents that "Hollywood that never was, but always will be", while the rest of the park is set up to be like a Studio Backlot, with sound stages and sets. The guard booths would be in charge of keeping guests out of the backlot since, that area would be busy with various production shoots and you can't have guests walking around at will. This all plays into the overall story of the Studios.
Besides that, Imagineers liked to include some humor (and perhaps reality) with these booths. The next time you walk by one of them, be sure to look into them, because inside the booths, we find another story being told. Inside, you will find scripts and acting books, which tell you that like everyone in Hollywood, everyone is always looking to become a movie star and even the security guards have their eye on any opportunity to "make it" in the movies.