Bump and X-Slayer, I don’t think you’re quite hearing my point. Admittedly, I don’t think that I’m exactly arguing for the OP, but let me restate.
Bump said: “The idea behind all this is that larger states get more representation in the lower house because of population, but smaller ones get equal say at the senate level.”
But I have clearly shown that small states are, in fact, dominating the big states – they are getting an overwhelming say. Please address the table I linked to that shows, for example, how California is running a 58 billion dollar balance of payment deficit with the federal govt while small states all run surpluses. As it stands now, your unwillingness to address this makes your advocacy for state-state equality highly dubious – until you speak up, I will have to assume that you are actually in favor of our biggest, most dynamic parts of the country being bled dry by the backwaters. X-Slayer, on this subject all you said was that you see it differently, but you provided no reasons for your view at all. Next time, please provide empirical evidence you have that the balance of power in the legislative branch is not slanted heavily toward small states, or at least some reasoning I can respond to.
Further, the data I linked to indicate that the Senate has so fully tipped the scales in favor of small states (which already have too much power to block const. amendments and in the electoral college) that it has effectively negated the influence of the House, which exists specifically in order to provide proportional representation. So add this to the list of criticisms of the Senate.
Also, I don’t think that the Senate is only a graveyard for legislation, but it is clearly not living up to the deliberative, productive function that the founders intended, either. It is the sick man of our legislative branch, and some kind of change is needed. Personally I would not argue for outright abolition, but I would be in favor of making the Senate more proportional. Keeping it somewhat skewed in favor of small states would satisfy all of the defenses of the Senate made on this thread; why not make it so that state senate delegations are calculated to be halfway between their actual population proportion and what we have now, with special, highly unfair and outsized representation for small states? Or let’s say that the bottom 24 states with 12% of the population should only get, say, 24% of the Senate representation, instead of their current 44% affirmative-action-special-right level.
I’m glad we all agree that the Senate’s current 2-senators-per-state rule came about as a compromise, and not because of the founders’ profound foresight. It was just a compromise, nothing more; and once it begins to infringe upon the citizens’ right to life, liberty, and the pursuit of happiness, as it slowly has, it should be revised or discarded like other constitutional relics. Here’s our Declaration on life, liberty, yadda: “That whenever any Form of Government becomes destructive of these ends, it is the Right of the People to alter or to abolish it, and to institute new Government, laying its foundation on such principles and organizing its powers in such form, as to them shall seem most likely to effect their Safety and Happiness.” Our system was intended to be changed. So please, from now on, be a patriot and refrain from appealing to the “it’s there so we shouldn’t change it” defense, as this is not rational argument but instead some kind of superstition. 
And I can’t believe no one is interested in the fact that other countries aren’t interested in using our system, and that in places where it has been used (like Brazil) it’s failed to address persistent problems. All I’m saying is that the rest of the world copies all kind of things from us, and that the fact that they choose not to copy this aspect should raise questions in your mind.
JKlann, I fully agree that gerrymandering is screwing up the democratic process. I think the House should abolish districts, with all congressmen elected by state-wide contests. But that is another topic.