Celebrities study their lineages and family trees, usually learning surprising secrets they never knew about their families.

Food Network's Guy Fieri rolls out to visit America's favorite diners, drive-ins and dives, interviewing the owners of the food establishments and samples the items on their menus.

Clark Kent builds his secret Superman identity and embraces his role as the hero of Metropolis, while sharing adventures and falling in love with Lois Lane, a star investigative journalist, who also takes Jimmy Olsen under her wing.