The biggest cliffhangers on TV this week are the ones that you, the viewers, will resolve on your own. Will Terminator: The Sarah Connor Chronicles pull out of its ratings slump in time to win a second season? Will Jericho improve on last week's blah performance enough to avoid a second cancellation? It's crunch time for some SF TV shows. Click through for full listings, plus we have sneak preview clips of this week's Lost and Sarah Connor.
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