CBS has announced their new schedule for the 2009 – 2010 season. The network has the most viewers overall so they don’t have to make a lot of changes. But, because they’re in such good shape, they can still afford to shake things up a bit. That means dumping some shows whose ratings weren’t too bad.

The network has also picked up Medium which was cancelled by NBC. CBS says that they’re targeting a younger demographic next season but their choice of new shows doesn’t wholly reflect that philosophy.

With the largest number of returning shows of all five networks, CBS has renewed 48 Hours, 60 Minutes, The Amazing Race, The Big Bang Theory, Cold Case, Criminal Minds, CSI: Crime Scene Investigation, CSI: Miami, CSI: NY, Flashpoint, Gary Unmarried, Ghost Whisperer, How I Met Your Mother, Medium, The Mentalist, NCIS, The New Adventures of New Christine, Numb3rs, Rules of Engagement, Survivor, and Two and a Half Men.

Returning this Summer are Big Brother and Million Dollar Password (which is unlikely to return for season two). New series for the Summer months include Do You Trust Me? and Jingles.

Which CBS show shouldn't have been cancelled? Eleventh Hour The Ex-List Game Show in My Head Harper's Island Swingtown The Unit Without a Trace Worst Week View Results  Loading ...

Next season, the Tiffany network has a fair number of new shows on the way as well. They include Accidentally on Purpose, Arranged Marriage, The Bridge, The Good Wife, Miami Trauma, Three Rivers, and Undercover Boss. You can also expect the NCIS spin-off, NCIS: Los Angeles.

And now, for the shows that won’t be back next season. Interestingly only a couple of these had really bad ratings. When you’re at the top of the heap, you can be choosy.

Eleventh Hour
A brilliant biophysicist helps the government investigate strange cases. The ratings weren’t too low and the show has a devout following but CBS execs cancelled it after 18 episodes.

The Ex List
A psychic tells a young woman that she’s already dated the man of her dreams and, if she doesn’t marry within a year, she’ll always be alone. The series was pulled after four installments but all 13 episodes were completed for a possible DVD release.

Game Show in My Head
A hidden camera show from Ashton Kutcher in which everyday people perform crazy stunts in public to try to win up to $50,000. The show enjoyed a brief eight episode run in January and won’t be back with more.

Harper’s Island
This murder mystery show started out pretty strong but quickly lost viewers. CBS is burning off the existing 13 episodes on Saturday nights. If there was going to be another season, it would have revolved around a new mystery.

Swingtown
A drama that follows three families in the swinging seventies. CBS ran it during the summer months and it attracted a small but devoted audience. The network tried to find another outlet for season two but couldn’t.

The Unit
This beloved military drama followed the lives of both a special forces team as well as their family members at home. A victim of cost-cutting measures, Dennis Haysbert and company won’t be returning to fight again.

Without a Trace
This venerable crime drama about the FBI’s New York Missing Persons Squad is about to go missing itself. Due to budget cuts and sinking ratings, the show won’t be back for season eight.

Worst Week
Thankfully, we got to see unlucky Sam and his bride have their baby together. Unfortunately, we’ll never get to see if Sam’s klutziness is hereditary. The show has been cancelled after 15 episodes. There was talk of renewing the show as a cheaper, multi-camera sitcom but it didn’t work out.

Will you miss any of these cancelled shows? Has CBS made any mistakes or have they gotten these right? See any they shouldn’t have renewed but did? Please don’t forget to leave your comments below!

Note: CBS later changed the name of new series Miami Trauma to Miami Medical.

Here are updated cancelled/renewed listings for the five networks: ABC | CBS | The CW | FOX | NBC

Images courtesy CBS.