Both Ingrid Bergman
and Humphrey Bogart
actually appeared in this movie, as Ilsa Lund and Richard "Rick" Blaine from Casablanca
(1942) respectively, by way of using original film footage from that movie, thereby the two making "archival film appearances". See more
[clip from 'Casablanca'
Hello, radio tower, Lisbon plane taking off in ten minutes, east runway. Thank you.
Richard 'Rick' Blaine
Louis, have your man go with Mr. Lazlo and take care of his luggage.
Certainly, Rick, anything you say. Find Mr. Lazlo's luggage and put it on the plane.
Yes, sir. This way please.