A host of stars are turning out this weekend to help Jerry Lewis with his Labor Day fundraiser for the Muscular Dystrophy Association. Country singers Reba McEntire and Dolly Parton, rockers Three Dog Night and Train, pop veteran Tony Orlando, and comedian George Wallace are just some of the celebrities taking part in the 44th annual Jerry Lewis MDA Telethon. This will be the legendary comedian's first telethon without longtime announcer and co-host Ed McMahon, who passed away earlier this summer. McMahon will be remembered with a special tribute segment during this year's broadcast. The 44th annual Jerry Lewis MDA Telethon originates from the South Point Hotel in Las Vegas from Sunday night into Monday.