Given that there isn't anything resembling improvement,...
I'm not particularly happy with a lot of things that Obama has done, or hasn't done, and I'm not particularly happy with how moderate and gutless he is, sometimes, especially when it comes to negotiating with the right, but he's certainly been better than any republican alternative. And he did accomplish some good...
If your a kid just out of college and haven't got that first job yet, you are now covered by your parents insurance still
If you have a pre-existing condition it can't be used by insurance companies to deny you insurance
Your insurance company can't drop you when you get sick
Your insurance company can't impose annual and lifetime limits
Presided over the repeal of Don’t Ask Don’t Tell
Appointed first Latina to the Supreme Court
Appointed first black Attorney General, Eric Holder
Lilly Ledbetter Fair Pay Act
Extending benefits to same-sex partners of federal employees
Matthew Shepard and James Byrd Jr. Hate Crimes Prevention Act
US auto industry rescue plan (Romney was against this one if I recall)
Caught more Taliban Leaders in one month than Bush & Cheney did in six years. And gave the order to kill Bin Laden.
Ordered SEAL operation that resulted in killing of three terrorists and the release of US captain held by Somali pirates.
Did in Libya what Bush/Cheney/Rumsfeld only promised to do in Iraq. Got in quick and painlessly, limited US involvement, were welcomed as liberators.