You can watch full episodes on nbc.com. Also check out journeyman and heroes. (both sci-fi, full episodes on-line)
70's writing, IMO, was lame even in the 70's. Writers were under pressure from execs with IQs less than 46, and whom had never read a sci-fi short story or novel in their lives (because they didn't know how to read--they only knew how to talk loudly in restaurants)
I've only watched three episodes and thought the writing was fairly good. Let's hope the execs stay out of the writer's office. Looking at a middle aged Michael Ferrar is like watching his dad (Jose') 30 years ago--uncanny resemblance. I think Michael's a better actor than his dad--or maybe he listens to the director.
As far as the physics goes... no. You can't put new wine in old wine skins without a mess, and you can't mount pneumatic machinery on a human skeleton without a mess. Also the brain interface stuff is a crock. But I know to suspend my scientific knowledge when watching a sci fi, so that I can enjoy it.