Daily Facts, Random Facts, InterestingCuriousOneMay 17, 2018Played, Guest, Callers, Frasier, staycurious, Fact, Celebrities, Verified, Facts, WereComment All of the guest callers on Frasier were played by celebrities Daily Facts, Random Facts, InterestingCuriousOneMay 17, 2018Played, Guest, Callers, Frasier, staycurious, Fact, Celebrities, Verified, Facts, WereComment