Robin Williams tops Michael J. Fox in return of sitcom vets Robin Williams has earned early bragging rights over Michael J. Fox in the competition between two sitcom veterans returning to network TV -- with an asterisk. The Nielsen company said Friday that Williams' new CBS comedy, "The Crazy Ones," debuted before 15.6 million people on Thursday night. It competed directly at 9 p.m. ET with "The Michael J. Fox Show" on NBC, which was seen by 7.2 million people. Watch: Robin Williams on his "giant reboot," marriage and "The Crazy Ones" Williams, who plays an advertising executive working in a firm with his daughter (played by Sarah Michelle Gellar), had a huge advantage. "The Crazy Ones" directly followed a new episode of television's most popular comedy, "The Big Bang Theory," which was seen by 19.5 million people in the second of a two-part season premiere. By contrast, the second half hour of "Parks & Recreation" on NBC, which preceded Fox's new show, had less than 3 million viewers. CBS succeeded in getting people to sample Williams' new show by scheduling the extra "Big Bang" episode. Moving forward, however, "The Crazy Ones" will be preceded by another freshman sitcom, "The Millers," on the schedule. "I really think you have to sit and wait to see what happens," said Brad Adgate, researcher for Horizon Media. NBC ran two separate episodes of "The Michael J. Fox Show," where the star plays a newscaster coming back to work with Parkinson's disease, which Fox also suffers from. The second, at 9:30 p.m., had a larger audience of 7.4 million people, Nielsen said. NBC notes that the audience during that hour was double what the network was reaching on average at 9 p.m. ET last year with "The Office" and "Parks & Recreation." Adgate said there was an expectation that the well-known Fox would attract a bigger audience for his return than he actually did. "Granted, it's a weak lead-in," he said, "but they put him on the show to create appointment viewing and that didn't happen." Both shows apparently attracted a lot of the stars' old fans. Adgate said the median age of "The Crazy Ones" audience was 55, while it was 54 for "The Michael J. Fox Show."