Everybody's talking new New Deal these days — and, predictably, the FDR-haters are out in force, with all the usual claims about FDR having actually made the Great Depression worse. (To the right, way back when, FDR was "That Man." Now Obama is "that one." Interesting.)
FDR might have been more of a Keynesian if Keynesian economics had existed — The General Theory wasn't published until 1936. Note in particular that in 1937-38 FDR was persuaded to do the "responsible" thing and cut back — and that's what led to the bad year in 1938, which to the WSJ crowd defines the New Deal.
Implications for Obama: be inspired by FDR, but don't imitate him slavishly. In particular, your economic policy should be bolder, not more cautious.