Yeah, I mentioned that at work once. That in foreign countries your return is pretty much done for you, and you just sign off on it. If it isn't correct you provide proof and then send that amendment back in. I got an incredulous stare and an "Oh, that'd be great for the government. They could say whatever they wanted and people would just pay up."
A good many people have no idea that the IRS already has all your W-2s and could fill out a simple 1040-EZ on your behalf. Sure, when you're itemizing it would get a bit more complicated, but for the vast majority of folks who don't itemize, there is no reason that the IRS can't have everything filled out for you, and all you need to do is sign and return.