must see :Big B's look in Pa revealed

Yes, this is Amitabh Bachchan… You'd be excused for doing a double take, but chinta not – he hasn't actually shaved off his head.

This is the much-protected, top secret look that he's sporting in the the Balki-directed movie, Pa. The film is being shot in Delhi, and Big B's son Abhishek is also part of the cast and in the city. While Abhishek has been seen at the shooting location daily, Amitabh has been coming and going like an 'undercover' agent – literally, for they kept him under the cover of a towel. The unit has been extremely careful about keeping this look under wraps, changing Amitabh's routes to and from shooting.

According to sources, the make-up artiste is a firang lady, and she takes about four to five hours to achieve this look. The make-up has been done at Amitabh's Gulmohur Park residence on all the days of shooting.
In the film, Amitabh plays Abhishek's son. The role is of a man who ages faster than normal people do.

It's called Werner Syndrome. Robin Willams did a movie on it, Jack.

In the Button movie the character aged backwards, here it's faster, so I think it's a remake of Jack