Like psperry, I ditched my Cable Card (2 HD Primes) and use antenna and TVE (HuluTV) and have no issue. Lost Hallmark Channel, but fortunately my wife was ok with that, otherwise we get everything else we watch.
Biggest hassle was that I had to port over the "house" line from the triple play package to our cell service because my wife didn't want to give up the house number (she gives that out instead of her cell to retailers, etc). Cut about $30 out of our savings, but still saving a decent amount by cutting the cord.