I give Obama a huge amount of credit for appointing Sonia Sotomayor and Elena Kagan to the Supreme Court. At the end of the day, Supreme Court appointments are the single most important part of the Presidential post in terms of long-term consequences, and Obama nailed both his shots.
In terms of policy his record is paltry in the first two years and nonexistent in the next four, but the latter part of that is due more to Congress. The first part is on the White House and Democratic Congressional leadership, though.
His foreign policy, though it has had some setbacks, is still a net positive by any reasonable standard.
Barring events (and events will happen over the next two years) I would be surprised if Obama is considered below a C to C+ president, and could well end up in the B- or B range.
The ACA.
The stimulus bill and managing the recession.
Dodd-Frank.
That stacks up to any President in recent memory. It not only stacks up, each one was more important than anything Clinton did in terms of domestic policy. The ACA especially is a major accomplishment that ought to go down in history.
How is that record paltry?