I agree with Atrios that Republican destructiveness has reached a new level of ghastliness.
My theory is that the Republicans were really frightened in January 2009 that Obama really would be FDR 2.0 and therefore decided to block all his efforts to make the country better on the theory that if things got worse they could get back in power. It helped that neither Obama nor the Senate Democrats had any intention of doing anything for ordinary people.
Now I think they have expanded upon their strategery. I think they actually want to make the US as ungovernable as possible so that they will win in 2012.
I don't think that this is a very good strategy. But it might work against the current Democratic party.