Where the heck are our congress members???

I confess - I don't watch CSPAN very often, but I think I need to start checking it occasionally.  Why?  Well, it seems like every time - and I mean EVERY time - I see a clip of someone in congress speaking, there's NO ONE else in the picture.  What's the point of someone from congress arguing a point if there's no one else there?  (Does the "tree fall in the forest" question spring to mind?)

There's all sorts of talk of changing rules for filibusters (did you know that they don't even have to stand there and speak?) and constitutional amendments for balancing the budget.  Why don't we have some rules that our representatives actually have to BE THERE TO REPRESENT US!?!