Drama meets "Dateline" in "The Thing About Pam," an NBC series that seeks to turn one of the newsmagazine's salacious stories into a limited series, complete with ghoulish narration by reporter Keith Morrison. Featuring Renée Zellweger tromping around under the weight of prosthetic makeup, it's a true-crime experiment that clearly wants to be the next "Fargo" and doesn't get there.