Danny Kaye's THE SECRET LIFE OF WALTER MITTY is most certainly a classic, based on the short story by James Thurber, and people have been trying to remake it for years, including Steven Spielberg and Ron Howard. I remember reading several years back that Jim Carrey was going to star in it, but that never coalesced. It's always been a favorite film of mine, and the escapist fantasies of Kaye's character were well realized on screen.
Deadline is reporting that Ben Stiller looks to remake the film as apparently Steve Conrad's (THE PURSUIT OF HAPPYNESS) script was good enough for Stiller to want to sign on. No word on a director yet, but now that the script is finished to satisfaction, I'm sure that will be happening soon. Perhaps Stiller himself may want to direct it - MITTY is probably more warmhearted than the films Stiller has directed so far, so they may want to find a director more suited to the task, but Stiller's directed some funny comedies, and one could say that THE CABLE GUY is a darker version of the story, with Carrey's character escaping into the fantasies of television.