and everybody just thought she was fabulous. narrator: other famous guest stars included clarenceus guest clemens, mr. t, and muhammad ali. mcilwain: i remember when muhammad ali came on the show. i think arnold had a sort of funny variation of the fly like a butterfly, sting like a bee line, but i really like a remember just those two people being up against each other. hi there, arnold. who s that? it s me, the champ. joe louis? narrator: in one of the most memorable and highest-rated episodes, first lady nancy reagan stopped by thenancy drummonds to talk to the family about the dangers of drugs as part of her just say no initiative. mrs. reagan, i didn t know that you knew mr. drummond. i don t. (chuckles) i m really here to see arnold. what you talkin about, mrs. reagan? weiss: nancy reagan being on the sitcom solidified diff rent strokes as being,