This is, of course, a matter of pure personal opinion.
I think that you can, if you believe in this, say that Obama has done a good job by pushing the health care reform bill through Congress. It had looked like the bill might be dead when Scott Brown won the election in Massacusetts last year.
Other than that, there has not been much going on. The health care bill took up most of Obama's time and energy.
You could say that the economy is starting to turn around and you could give him credit for that, too, if you want to.