Image Credit: Jason Merritt/Getty ImagesEbert Presents At the Movies debuts Friday on PBS, and the show is a return for Roger Ebert in more ways than one. In a blog post today, he revealed that he will be wearing a prosthetic chin for his “Roger’s Office” segment. “That’s not to fool anyone, because my appearance is widely known,” he writes. “It will be used in a medium shot of me working in my office, and will be a pleasant reminder of the person I was for 64 years. Symbolically, it’s as if my illness never happened and, hey, here I still am, on the show with these new kids. When people see the ‘Roger’s Office’ segment, they’ll notice my voice more than my appearance.” Ebert, whose battle with thyroid cancer left him disfigured an unable to speak without the aid of a computer, describes the two-year process of those who worked with him to create the silicone prosthesis, a device that fits over the lower face and neck and matches his skin tone. He also explains the appeal Gerard Butler’s chic mask in 2004’s Phantom of the Opera held for him. Read his full blog entry, complete with photos, here.