saturday is senger shania twain's 50th birthday.hat's new for your weekend: lily tomlin, julie garner, marcia gay harden, and judy greer star in the new indy comedy, "grandma." >> what is your involvement? >> i am her grandmother and i'm your mother. >> yes, but what are you doing here? >> i'm going to be there because this is my granddaughter. >> rose: bon jovi has a new album out, "burning bridges." ♪ you know it's true >> rose: and meghan trainor has tour dates in louisville, kentucky and des moines, iowa. ♪ ♪ i know you lie, your lips are moving ♪ >> rose: before we leave you tonight, this story. former president jimmy carter held a remarkable press conference on thursday. it was his first since his cancer revelation. in it he revealed that doctors had now found cancer in his brain and would begin treatments immediately. he has been a frequent guest on this program, and we wish him well. that's "charlie rose: the week" for this week. we'll see you next time. >> i've had a wonderful life. i've had thousands of friends, and i've h