“They’ve spent their whole life taking care of other people, and they’re real superheroes to me,” McCarthy says on Monday’s episode of HGTV’s “Celebrity IOU,” which is scheduled to air at 8 p.m. “Getting the chance to do this for my Aunt Connie and Uncle Jim is so amazing. They’re two of just the kindest people, and they don’t put themselves first. It’s just not who they are.”