At this point, no, Obama should not be impeached (and convicted — everybody forgets the second part of the process). There are no obvious and compelling legal grounds for impeachment. (Being really really really pissed off about Obamacare is not a compelling legal reason.)
People throw around the idea of impeachment way too casually. Impeaching and convicting a sitting president effectively means disenfranchising the millions of citizens who voted him into office.
I always felt that Nixon never should have resigned. I realize that the House drew up the papers to proceed with impeachment but the process was never undertaken because Nixon resigned. I always had the feeling that Nixon might have been impeached by the House but would not have been convicted by the Senate (as happened with Clinton). Nixon would have remained in office.
So everybody: put your impeachment guns back into your holsters. Work on getting Republicans elected to Congress in 2010 and a Republican elected to the White House in 2012 instead.
Didn't we succeed in doing that for 8 years? All it brought us was, well, what we have today. Is there perhaps another answer to all of this, one that has nothing to do with politics? I say it is faith, and only faith, that will bring back honest, rational government and peace. For decades there were forces that worked tirelessly through government and law to drive God out of the public and hence out of our lives. Those 'forces' have temporarily triumphed over us, because we arrogantly thought America would remain powerful and free forever, with or without God. As a nation we have to return to God, or go the way of the faithless Europeans. Europe has gone to Hell in a handbasket and we are running in their footsteps.
Having said that I'm going off to pray now, that God will grant faith to Americans once again, so we can get on with the business of placing Him first, instead of technology, science and 'medicine'. It is the insane quest for better 'medicine', (health care), that has taken us where we are today. God will not be mocked, He is a jealous God that detests 'idols'. I can almost hear Him saying, "You want to place your health and your peace of mind in your government's hands, then here, have it your way"?