lets see.
Obama fixed the great recession by promoting an increase in potential output (long run aggregate supply) as well as by using an expansionary monetary policy and using emergency measures to prevent the US from entering a depression. The increase in potential output will stop a rise in inflation rate as well as to stabilize the economy and counteract the self feeding recessionary system that we were in.
He also dispelled rumors about his birthplace the same week that under his watch Osama bin laden was killed. I'm pretty confident that he will be reelected
on a different note, he made stem cell research much more difficult. Bush's system was actually better at this point due to the fact that acquiring new lines is more costly than the actual experiments themselves and funding is cut to acquiring lines but is given to research. This has pushed private investors out of stem cells resulting in a decrease in funding.
He is a very smart man though, I haven't seen any other candidates that impress me. Trump=retard who tried to get the death penalty instituted on falsely accused underage kids who were exonerated of rape AND refused to apologize to them for the millions he spent in advertising and SLANDER on the falsely accused teens, prompting an illegal trial and false imprisonment for several years.