I suspect 2008 will be the coming out party for the Greens. There are an awful lot of leftists that will refuse to vote for her in the general if she wins the primary.
Do you remember that Susan Sarandon made a statement last summer, that she hated Hillary. She said that she used to really like her but that now she thinks that Hillary didn't really stand for anything, that she was willing to say anything to get votes. This was in reaction to Hillary's opposition to a Dean presidency and the release of those letters to Clinton, urging a war in Iraq. Hollywood would not back a Hillary presidency.