Emergency!

"Untold Stories of the ER" presents a craziest cases special that looks back at highlights from the past nine seasons. Among the selected check-ins: A man with a live catfish stuck in this throat, a woman with a stiletto in her cheek, a man with a turtle clamped to his throat and the time George Clooney's Dr. Ross got turned down by a nurse. 9 p.m. Friday, Discovery Fit & Health

Richard on tour

"Now: In the Wings on a World Stage" provides only a fraction of Kevin Spacey and Sam Mendes' heralded production of "Richard III." What's at the heart of this insightful documentary is how a classic play is received as the troupe travels around the world, making stops at Singapore, Sydney, Istanbul and San Francisco. It'll make you furious that the gang never stopped by the Guthrie. 7 p.m. Sunday, Ovation

Class reunion

It's been nine years since we last got a look at "The Comeback," the Lisa Kudrow vehicle that mercilessly dissected the cruel results of aging in Hollywood and the desperation that defines most reality TV. The series, which has returned for eight episodes, has lost none of its unsentimental punch. For an interview with Kudrow, see Saturday's Variety section. 9 p.m. Sunday, HBO

The spy who wanted to stay in the cold

Bill Nighy doesn't simply walk across the small screen. He glides. In "Worricker: Turks & Caicos," his disgraced agent Johnny Worricker is simply trying to stay out of trouble on a remote island. Fat chance. He's quickly blackmailed by a CIA agent (Christopher Walken) and drawn reluctantly into a web of corruption with femme fatale Winona Ryder at the heart of the matter. Go ahead and match these movies up against "Smiley's People." They're that good. 8 p.m. Sunday, TPT, Ch. 2

Neal Justin