recently i dropped my digital cable down to the cheapest 12-channel plan they had (i would have dropped it altogether, but over-the-air reception here blows), and got rid of cable phone service in favor of a $3 a month skype plan
i kept high-speed internet, though, because i can get just about whatever i'd want to watch or play through that (and i'm not even talking about piracy)
my cable/phone/internet bill has gone from $215 a month to $68
so, if i were you, i'd cut everything else before i cut high-speed internet