You do realize that spending a 'few bucks' (read: $20) on 'basic cable' doesn't get you much more than PBS, right?
For example, if I were to sign up for basic cable in my area I would receive:
CBS
NBC
ABC
FOX
PBS
CW
ION Television
ETWN
QVC
HSN
What, other than PBS (which comes free over the air), does basic cable get me? Morning talk shows? About half a day's worth of programming on PBS is educational television for children.
Now, if I were to pay for Comcast's next plan, the little-advertised Digital Economy, (read: $40 a month), I'll get the Disney Channel and Cartoon Network. Both are fine channels, but they specifically don't give you Nickelodeon which also has a ton of children's programming.
So, you're telling me I should spend another $480 a year just to supplement the superb content my son gets now.