In a casting scoop reported by TV Line, the CBS sitcom had enlist former Taxi star Marilu Henner. Get the spoilers abound --
Henner will guest-star in the Season 10 finale, playing the grandmother of a young woman Walden (played by Ashton Kutcher) is dating. And then Walden of course falls for Grams herself!
The finale will air on Thursday, May 9th.