You knew it had to happen eventually. Now that “American Idol,” “America’s Next Top Model,” “Project Runway” and “Top Chef” have all wrapped up for the season, it’s finally time for serious art to take its turn on the Reality TV Tilt-A-Whirl of Fame. “‘Artstar’ is an eight-week reality-TV series in which eight artists, age 22 to 67, vie for an exhibition at a popular New York gallery. All involved should be ashamed of themselves, but, hey, dude, it’s, like, a new age and, basically, here’s something amazing that will resonate, totally and absolutely.”