Sam - We're going to be on cable but we're actually cutting back our cable and plan on using AppleTV for ~70% of our viewing. Argie is a news freak, so I can't ditch cable totally... I want more control over the content we watch - I'm tired of paying $$$ for commercials, bad content, and lots of re-runs. We (the kids and I - not Argie) are into gaming - love the Wii - and one night a week is 'Wii Night'. In other words, I'm justifying the purchase by making cuts elsewhere and taking better control of what we watch, as the kids are reaching an age where they're more into movies and less into 'kiddie shows'.
As for reviews, there's extensive reviews of the model we've purchased online:
Amazon
Tiger Direct/CompUSA
CNet
...and I'll post again when it's all set up, etc.