Article continues below advertisementKirstie Alley never shied away from saying exactly what was on her mind - and according to Kelsey Grammer, that fearless energy made for some unforgettable moments behind the scenes on Cheers.During a recent interview, the Frasier star shared a surprising memory from the sitcom's set, recalling how Alley once jokingly sized up her male costars in a bold and very on-brand way.Article continues below advertisementSource: @MegynKellyShow/XKelsey Grammer shared a funny memory of Kirstie Alley on the set of 'Cheers.