I tend to agree with you, God knows I've never rushed home to watch anything on C-Span. I do think though, that part of the problem has been that the information made available to the public was half-duplex. With the Internet so widely used now a days, the ability for citizens to actually weigh in on issues is possible.
Just a thought, but if they design Government 2.0 to be interactive, I think that a lot more people will want to get involved. Hell, Obama's campaign in and of itself is a testament to that.