Obamacare Deadline Tests High-Profile Pitch
PHOTO: A social media campaign aimed to persuade young men to sign up for Obamacare

WASHINGTON - LeBron James wants you to sign up for health coverage under Obamacare. So do Magic Johnson and Jonah Hill's mom.

Monday is (sort of) the deadline for Americans without employer-provided health coverage to sign up for insurance under the Affordable Care Act - the White House extended it so that anyone who's begun to sign up by Monday can still complete the process by April 7 - and the final enrollment numbers will be an important test for a law intended to expand access for the uninsured.

It'll also be a test for the White House's high-octane sales pitch, one that's involved celebrities, YouTube videos, and paid media.

Most famously, the president himself sat down with Zach Galifianakis for an episode of his "Funny or Die" video series "Between Two Ferns." Obama promoted health-care signup and proclaimed that HealthCare.gov's glitches are a thing of the past, in a video that's been viewed on more than 3.8 million computers according to YouTube's counter.

In February, Michelle Obama appeared on "Late Night With Jimmy Fallon" to tell viewers that "now young people can get insurance for as little as $50 a month, less than the cost of gym shoes, and for the moms and dads who are out there worried about their kids, we want you to encourage your kids to sign up, for that peace of mind we all look for" - and declaring, of the infamously buggy HealthCare.gov, "It's working!"

The first lady continued her message to young people and parents in a March 14 YouTube video with some moms of famous people - Jonah Hill, Adam Levine and Jennifer Lopez.

"We nag you because we love you," Michelle Obama said at the end. "So go to HealthCare.gov and enroll today."

LeBron James also promoted signing up in a TV ad to air during NCAA-tournament basketball games: