One of two newcomers to the category, "Who Do You Think You Are?" contends for its third season.
"Undercover Boss" contends for the third straight year.
One of two newcomers to the category "Shark Tank" contends for its third season.
"Mythbusters" is hoping that fourth time is the charm.
After a year's hiatus, 2010 winner "Jamie Oliver's Food Revolution" returns to contend for its second and final season. It is the only past winner in the running.
"Antiques Roadshow" is looking for its first win on its eighth consecutive nomination.