Warren Meyer points out how Obama fits the mold of a "Corporatist" more than a Socialist. I've also seen people describe him as a Mussolini-style Fascist.
Of course, the media marginalizes anyone who uses such terms (while stupidly lumping libertarians and anarcho-capitalists into the "far right-wing" category, along with neo-Nazis and skinheads, when they are as different as can be).
The term "collectivist" nicely ties the -isms with which to describe Obama into a simple category. Unfortunately, the average person is unfamiliar with the term, and doesn't think much beyond the arcane, useless 1-dimensional left-right continuum.