Originally Posted by ubertuber

Pan, if you go to The Library of Congress you can easily search for the bills that Obama has co-sponsored. Many, many of them have Republican co-sponsors. I started to compile a list, but it because tedious becuse there are so many.

Here are two WaPo articles that talk about his performance in the IL state legislature. Again, solid records of bi-partisan work, including one bill that was passed unanimously.

This one is anecdotal.
This one is "news".

Here's a quote from Republican State Senator from IL, on the Fox website, of all places:

“People on both sides of the aisle would find him to be someone who would reach across to find out why people think the way they do,” said William Mahar, a former Republican state senator. “He wouldn’t talk just to people who agreed with him.”

In short, I think that your perception of Obama as a legislative unilateralist is unfounded.