Christina Applegate

Emmy Award-winning Actress & Co-Host of "MeSsy"; Breast Cancer Survivor & Multiple Sclerosis Survivor

Selma Blair

Actress; Multiple Sclerosis Survivor; Healthcare & Disability Advocate

Clay Walker

Country Music Artist Known For "What's It to You" & Multiple Sclerosis Survivor & Founder of Band Against MS

Bill Pullman

Film, Stage & Television Actor; Multiple Sclerosis Society Ambassador

Madeleine Stowe

Award-Winning Actress Known for ABC's Drama "Revenge" & Max's "Welcome to Derry"; Multiple Sclerosis Advocate

Montel Williams

Emmy Award-Winning Talk Show Host; Multiple Sclerosis Survivor; Health Equity & Veteran Advocate

Shemar Moore

Actor Best Known for "Criminal Minds" & "S.W.A.T."; Founder of Baby Girl LLC & Multiple Sclerosis Advocate

Jamie-Lynn Sigler

Actress Known for "The Sopranos" & "Big Sky" & Co-Host of "MeSsy"; Spokesperson for Eating Disorders & Multiple Sclerosis Survivor

Marg Helgenberger

Actress & Breast Cancer Research Advocate

Brian Billick

FOX NFL Analyst, NFL Network Contributor & Former Super Bowl-Winning Head Coach of the Baltimore Ravens

Phil Keoghan

Emmy-Award Winning Producer & TV Personality, Best Known as the Host of "The Amazing Race" & "Tough as Nails"; Multiple Sclerosis Advocate

Steve Garvey

Cancer Survivor; Former Professional Baseball Player; 10-Time MLB All-Star, World Series Champion & National League MVP

Teri Garr

Actress, Comedian, Multiple Sclerosis Spokesperson

Speedbumps: Flooring It Through Hollywood

Art Alexakis

Musician, Singer-Songwriter & Guitarist; Front Man of the '90s Rock Band "Everclear"

Loni Anderson

Actress; Best Known As Jennifer Marlowe on WKRP in Cincinnati

Demitrius Omphroy

First Professional Athlete in Major League Soccer with Multiple Sclerosis & Motivational Speaker

A Great Big World

Two-Member Musical Group Known for the Hit "Say Something"

Jonathan Katz

Emmy Award-Winning Comedian, Actor & Voice Actor; Host of "Hey, We're Back"; Multiple Sclerosis Survivor

Rain Pryor

Actress, Comedian & Multiple Sclerosis Spokesperson

John H. Noseworthy, M.D.

Neurologist and Former President and CEO Mayo Clinic