NBC, which picked up I'm a Celebrity ... Get Me Out of Here! , the reality show that aired on ABC in 2003, posted solid numbers with a two-hour season debut on Monday. Celebrity , which was slammed by most critics, averaged 6.35 million overall viewers for second place, but more importantly it came in first among viewers 18-49, advertisers' favorite demographic group. The program edged out a two-hour edition of ABC's The Bachelorette, which averaged 6.34 million viewers but came in third among younger viewers.