Ebert is not on my top list of critics - I much preferred Siskel (R.I.P.) when they were together, and I think Siskel kept Ebert on his toes and more focused. That being said, I think we see eye to eye on 8 1/2:
"8 1/2" is the best film ever made about filmmaking. It is told from the director's point of view, and its hero, Guido (Marcello Mastroianni), is clearly intended to represent Fellini. It begins with a nightmare of asphyxiation, and a memorable image in which Guido floats off into the sky, only to be yanked back to earth by a rope pulled by his associates, who are hectoring him to organize his plans for his next movie. Much of the film takes place at a spa near Rome, and at the enormous set Guido has constructed nearby for his next film, a science fiction epic he has lost all interest in.