For the most part, CBS has had a very good year. New series like 'Undercover Boss' and 'NCIS: LA' lived up to expectations and emerged as hits, and even though it's fallen off a bit lately, 'The Good Wife' is also a success.

But as the May upfront approaches, when the network has to make difficult decisions about what new shows to order and which programs to axe, it's a good time to assess what might happen. Here's our look at what's Tiffany network shows are on the brink ... and how it might play out.