9/8c CBS
Mac turns to the founder (Edward James Olmos) of a powerful New York City gang for help to prevent a street war from erupting. Mac put the man behind bars years ago, so he's not the most receptive guy to be asking for assistance. But the murder of the gang's leader threatens to trigger a war with a rival group that is certain to lead to more deaths. — Tim Holland

School Pride

8/7c NBC
This compassionate, newly minted real-world show's cool rule is to turn schools into jewels. Here, four community organizers and motivating personalities join forces with students, teachers and parents to renovate decaying schools and, in the process, restore something entirely different... a sense of value. In tonight's premiere, the team (SWAT commander Tom Stroup, designer Susie Castillo, comic Kym Whitley and pundit Jacob Soboroff) focus on transforming an aging school in Compton, Calif. Actress Cheryl Hines serves as an executive producer. — Dean Maurer

8/7c CW
With 200 Smallville episodes completed, it's time for a little reflection. What better place for that than a high-school reunion? Back at their alma mater, Clark, more so than Lois, is assailed by memories of the good old days with Lana and Chloe. But Brainiac (James Marsters) can't leave well enough alone. Visiting from the future, he takes Clark on a Dickensian journey through his past, present and future lives, revealing some painful truths surrounding Jonathan's death, as well as some inspiring things yet to come. — Rhoda Charles

Ghost Adventures
9/8c Travel
A paranormal investigation takes place in picturesque Estes Park, Colo., at the infamous Stanley Hotel, which inspired Stephen King to write The Shining and is said to be one of America's most haunted hotels. The intrepid "boo crew" try to provoke ghosts while spending two nights locked inside some of the resort's most paranormally active spots, including the notorious Room 217, where Stephen King once slept. The hotel first opened its doors in 1909, and some of its earliest guests, it seems, never checked out. — Karen Andzejewicz

MLB Playoff
8/7c TBS
Three nights after breaking through for their 50-year-old franchise's first postseason series win, the underdog Texas Rangers host baseball's Goliath, the 27-time World Series-champion New York Yankees. It's an intriguing matchup that deserves seven games worth of TBS coverage, which would likely give Yankee-killing pitcher Cliff Lee two precious starts. MVP-caliber stars anchor both lineups, from Rangers-turned-Yankees Mark Teixeira and Alex Rodriguez to AL batting champ Josh Hamilton and slugger Vladimir Guerrero of Texas. Lefties CC Sabathia (Carsten Charles) and C.J. Wilson (Christopher John) pitch under the Friday-night lights in Game 1. — Roger Leister

10/9c Syfy
Last season's cliffhanger left us understanding why you shouldn't provoke a giant, spider-like creature that can literally shape the world. The third season opens with a look at the aftermath — two wrecked ships and a tidal wave roaring toward Mumbai, India — and a standoff between Magnus and Wexford (Paul McGillion) as the latter foolishly tries to kill Big Bertha again. And it may take a sacrifice from Will to avert disaster. — Michael Chant

Teach: Tony Danza
10/9c A&E
Danza gets schooled in time management when his celebrity life converges with his responsibilities as a teacher. Along with juggling school duties, he fields a request from the mayor of Philadelphia, Michael Nutter, to host a charity show, and finds out it's on the same night he's already scheduled to perform in Atlantic City. He also talks one of his students out of quitting the football team. — Bill Ecklund