CBS just announced the addition of four new series to its 2006-07 primetime line-up. The four new shows feature a roster of award-winning actors and executive producers and a unique mix of concepts and genres. The freshman series include The Class, a young and sexy ensemble comedy; Smith, a high octane heist thriller starring Ray Liotta and Virginia Madsen; the apocalyptic drama Jericho starring Skeet Ulrich; and Shark, a glossy, high-stakes courtroom drama starring James Woods.

In an impressive achievement, CBS is returning six of its freshman series, which strengthened four nights of the schedule, for their sophomore seasons, including How I Met Your Mother, Criminal Minds, Ghost Whisperer and Close To Home as well as "The Unit" and "The New Adventures of Old Christine." They are part of the overall 18 series that return to the CBS primetime schedule, along with Two And A Half Men CSI: Miami, NCIS, CSI: NY, Survivor CSI: Crime Scene Investigation, Numb3rs, The Amazing Race Cold Case, Without A Trace as well as "60 Minutes," "48 Hours: Mystery" and Crimetime Saturday.

The new 2006-2007 schedule:

On Mondays, CBS adds one new series to its winning comedy line-up. "How I Met Your Mother," a show that captures a young and loyal audience, moves to 8:00 PM, followed by the new ensemble comedy "The Class" at 8:30 PM, forming a fresh, sophisticated young adult comedy block. At 9:00 PM, CBS returns "Two And A Half Men," followed by "The New Adventures Of Old Christine" at 9:30 PM. "CSI: Miami," caps the line-up at 10:00 PM.

On Tuesdays, CBS adds an exciting new series to a night that already features a potent and growing 8:00-10:00 PM block of drama. "NCIS" begins the night at 8:00 PM, followed by CBS's mid-season hit "The Unit." Both shows will serve as a launching pad for the new 10:00 PM dramatic thriller "Smith," a slick, insider's take on a group of professional thieves planning their next score.

Likewise, on Wednesday, CBS adds a new series, "Jericho," to a line-up that already boasts a dynamic block of dramas -- the rookie sensation "Criminal Minds" at 9:00 PM and the time-period winning "CSI: NY" at 10:00 PM. "Jericho," an explosive new drama that follows the aftermath of a nuclear explosion, will kick off the night at 8:00 PM.

On Thursday, CBS returns its powerful 8:00-10:00 PM programming duo of "Survivor" and "CSI: Crime Scene Investigation." The network will use "CSI" as a launching pad for its new James Woods legal thriller "Shark" at 10:00 PM.

And CBS will keep its winning Friday night intact, programming the two freshman successes "Ghost Whisperer" at 8:00 PM and "Close To Home" at 9:00 PM, followed by the unsung hit "Numb3rs" at 10:00 PM.

Saturdays will feature CBS's popular Crimetime programming from 8:00-10:00 PM, followed by "48 Hours: Mystery."

And on Sundays, CBS is making key scheduling moves designed to capitalize on the changing competitive landscape of the night. "60 Minutes" starts the night at 7:00 PM, followed by "The Amazing Race," which moves to 8:00 PM. And from 9:00-11:00 PM, CBS is airing "Cold Case" and "Without A Trace" to build a seamless block of drama.

Additionally, the network announced the pick-up of four shows for mid-season, including the Monday night stalwart The King Of Queens as well as two new dramas and one new comedy. They include 3 Lbs, starring Stanley Tucci in a medical drama about New York neurosurgeons; Waterfront, a drama about a colorful mayor in Providence, R.I. starring Joe Pantoliano; and Rules Of Engagement, a comedy starring Patrick Warburton that follows two couples and a single guy as they navigate the jungles of dating, engagement and marriage.

The new comedy is:

“The Class” (Monday, 8:30-9:00 PM, ET/PT), a series about the lives of a group of 20-somethings who are inextricably bound together having shared the same third grade class. Now face to face at an impromptu reunion to celebrate the 20th anniversary of the day they met, they wonder if they'll have anything in common besides vague memories of playground kisses and underwear sightings on the monkey bars. Jason Ritter, Heather Goldenhersh, Lizzy Caplan, Jon Bernthal, Sean Maguire, Jesse Tyler Ferguson, Lucy Punch and Andrea Anders star.

The new dramas are:

“Smith” (Tuesday, 10:00-11:00 PM, ET/PT) stars Ray Liotta as a criminal mastermind in a drama about a close-knit crew of career criminals who plot and execute intricate and ingenious high-stakes heists across the country. Jonny Lee Miller, Franky G, Simon Baker and Amy Smart also star.

“Jericho” (Wednesday, 8:00-9:00 PM, ET/PT) is a drama about what happens when a nuclear mushroom cloud suddenly appears on the horizon, plunging the residents of a small, peaceful Kansas town into chaos, leaving them completely isolated and wondering if they're the only Americans left alive. Skeet Ulrich, Gerald McRaney, Ashley Scott, Pamela Reed, Kenneth Mitchell, Lennie James, Sprague Grayden, Michael Gaston and Erik Knudsen star.

“Shark” (Thursday, 10:00-11:00 PM, ET/PT) stars James Woods as Sebastian Stark, a charismatic, supremely self-confident defense attorney who, after a shocking outcome in one of his cases and a personal epiphany, brings his cutthroat tactics to the prosecutor's office. As the head of the Los Angeles District Attorney's High Profile Crime Unit, Stark works for Jessica Devlin, (Jeri Ryan), the ambitious and accomplished D.A. who despises his ruthless strategies. Sam Page, Alexis Cruz, Sarah Carter, Danielle Panabaker, Romy Rosemont and Sophina Brown also star. Academy Award nominee Spike Lee directs.