Programs Showing in HD Today

Smallville

CW 8:00 pm ET

Oliver (Justin Hartley) collapses and reveals he only has 24 hours to live. Clark and Chloe (Tom Welling, Allison Mack) call Davis (Sam Witwer) for help, but his prognosis is grim. In his delirium, Oliver flashes back to the time he learned to use a bow and arrow and the first time he met Tess (Cassidy Freeman). Chloe then shocks Clark when she decides to use her powers to save Oliver in "Toxic."

The Office

Phyllis Smith stars in "The Office" Thursday on NBC.

NBC 8:30 pm ET

Things take a torrid turn at Phyllis' (Phyllis Smith) Moroccan-themed office holiday party when Meredith's (Kate Flannery) hair catches fire during a drunken dance, while Dwight (Rainn Wilson) corners the market on the hottest toy of the holiday season. Steve Carell, John Krasinski and Jenna Fischer also star in "Moroccan Christmas."

Supernatural

Jared Padalecki stars in "Supernatural" Thursday on The CW.

CW 9:00 pm ET

While investigating two mysterious deaths in a small town a few days before Halloween, Sam and Dean (Jared Padalecki, Jensen Ackles) discover a witch is sacrificing people to summon a dangerous demon named Samhain. Casteel (guest star Misha Collins) tells the brothers the release of Samhaim is one of the biblical Seals and will help free Lucifer in "It's the Great Pumpkin, Sam Winchester."

World's Toughest Fixes

NGC 9:00 pm ET

There's a lot of hard work in the Big Easy as Riley goes to New Orleans to help move a barge that has become stuck on the shore of the Mississippi River, where Hurricane Gustav blew it in summer of 2008. Salvage experts who distinguished themselves in the wake of Hurricane Katrina hope to use inflatable bags and wooden cribbing to raise the barge and float it back to the salvage yard.

Moments of Impact

DSC 9:00 pm ET

From terrifyingly close calls on the jet way to a sudden avalanche to unexpected animal attacks, this true-life reality series chronicles the most unforgettable and shocking images caught on film.

30 Rock

NBC 9:31 pm ET

Not realizing it's going to be the ultimate lovers holiday, Liz (Tina Fey) insists she and Drew (John Hamm) have their first official date on what turns out to be Valentine's Day. Meanwhile, Jack (Alec Baldwin) prepares himself for an unconventional holiday at church with new girlfriend Elisa (guest star Salma Hayek). Then Kenneth (Jack McBrayer) tries to win the affections of a new staffer. Jane Krakowski also stars in "St. Valentine's Day."

Soundstage

PBS 10:00 pm ET

From the program's Grainger Studio, Sugarland -- singer Jennifer Nettles and mandolin player Kristian Bush -- perform a versatile set including "Joey," "Steve Earle," "Genevieve" and older classics such as "Baby Girl," moving easily from pop ditties to soulful ballads. They also offer covers of songs by R.E.M., the band that shares Sugarland's Georgia roots.

The Listener

NBC 10:00 pm ET

Toby (Craig Olejnik) tries to help the blind sister of a Chinatown shooting victim find out who killed her brother, and his telepathic gift points strongly toward a Chinese crime boss with a lot to hide from the local police. Ennis Esmer, Lisa Marcos, Mylene Dinh-Robic and Anthony Lemke also star in "Foggy Notion."

The Listener

NBC 10:01 pm ET

After Toby (Craig Olejnik) saves a troubled boy from a brutal gang beating, he stumbles upon a hidden group of runaways and must draw on his own devastating personal secret to save these youths. Ennis Esmer, Lisa Marcos, Mylene Dinh-Robic and Anthony Lemke also star in the new episode "Lisa Says."