Spoiler Alert! Don't read this thread after an episode has aired. Duh!
I think the Fisher story was good from a standalone perspective.
Charles Fisher was in solitary confinement on Judgment Day for a crime he may or may not have committed.
The machines located him between after Judgment Day and before dying of thirst in a cell.
Prison had changed Fisher into Old Fisher and the machines found an use for him.
Old Fisher hated humans for his confinement in prison and gladly worked for the machines to remain alive.
Old Fisher was a torture expert and a trainer for machines.
At some point, Skynet decided Old Fisher could be trusted with a task in the past.
Old Fisher (NOT WEAVER) was to install a back door to allow Skynet to access government computers in the future.
With his task completed, Old Fisher was allowed to live a "normal" life in the past.
...
Gripes about the episode:
None really. It opened up the mythology of the machines' side as more than ruthless killers and partially addressed the future shifting due to present actions.
...
Once again, it was a lot better than Heroes!
EDIT: When are they moving Terminator to Friday? Is it after sweeps?