News roundup: '30 Rock,' 'Old Christine,' 'CSI'

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CBS is understandably making a big deal about William Petersen's last appearance on CSI this week. Except it might not be his last appearance on CSI.

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Laurence Fishburne may be the splashy new hire on CBS' CSI: Crime Scene Investigation, but the Emmy-and-Tony-winning actor wants to make it clear that the highly rated forensic mothership isn't about to become The Laurence Fishburne Crime-Fighting Hour. More »

As has been widely reported, William Petersen will exit CSI: Crime Scene Investigation mid-way through the hit forensic drama's upcoming ninth season. More »