You probably know that Jon Stewart is a flaming leftist, and hosts a "fake news" show on Comedy Central called The Daily Show. Kathleen Sebelius is the Health and Human Services Secretary. Even Jon Stewart doesn't think it's fair that corporations get a year before fines (or taxes, take you pick) are imposed, but the individual mandate takes place immediately. Jon even brings up that the "Affordable Care Act" is leading to full-time employees being cut back to less than 30 hours, so that employers don't have to pay for their healthcare.
Jon is effectively agreeing with Republicans!
He does however, want to go to "single-payer" healthcare. That would be socialized healthcare. Government-run healthcare, as they have in Canada, the U.K., and Cuba.
EDIT: The individual mandate has been pushed back, so that it doesn't kick in until after the 2014 mid-term elections.