Movies within movies

... and speaks every word of the dialog before it is uttered in the movie. Very irritating for anyone else watching within earshot, but if I remember correctly, the theater was nearly empty.

In The Player (1992) dir: Robert Altman, the Tim Robbins character tracks the Vincent D'Onofrio character to an art-house theater where he is watching Bicycle Thieves (1948) dir: Vittorio De Sica. Incidentally, "The Player" opens with a long tracking shot in homage to "Touch of Evil" while characters are discussing that movie.

Orson Welles' films are favorites for this practice. I have seen "The Lady from Shanghai" and "The Third Man" quoted recently but I cannot remember in which movies. Other classics I have seen quoted more than once are "The Searchers" and "Double Indemnity".