If you ever see Kevin Spacey at a club or bar, leave him alone. He's way too important for you. From the New York Post:

Spies at nightclub Home last Friday night saw the star "standing near a corner booth and dirty dancing by himself." When a cocktail waitress tried to take his order, Spacey wouldn't speak to her and instead whispered his orders to a male friend. "He only stopped dancing to order drinks or run frantically through the crowd to the bathroom," a source told The Post. (Source)

In all fairness, some of those corner booths really do look like closets. Poor guy, he probably got disoriented by all the loud noises and flashing lights in the club and was simply trying to seek out something familiar.