Regis Philbin appeared on "CBS This Morning" on Friday, and poked fun at host Charlie Rose.
"Incidentally, this show is two weeks old and Charlie Rose needs a day off? Excuse me, where is he!?" Regis asked. King assured him that Rose was away on assignment.
Philbin gave "This Morning" viewers his best Rose impression, revealed that he now sleeps till after 10:00 a.m., and said he did not have an opinion on who should fill his chair on "Live With Kelly."
"I shouldn't get involved, that's their show now," Philbin said of his former co-host and executive producer.
This is the second morning show Philbin has appeared on this week. On Thursday, Philbin visited "Today's" fourth hour to play a trivia game with host Kathie Lee Gifford and her mother.WATCH:
View key moments from Philbin's television career in the slideshow below: