The cast of Frasier meets most of the cast of Cheers in this landmark episode. Arriving in Boston to deliver a speech at a conference, Frasier (Kelsey Grammer) is reunited with his old drinking buddy Cliff (John Ratzenberger) -- who thinks that Frasier is in town to attend his retirement party. Later on, Frasier's dad, Martin (John Mahoney), bonds with the loquacious Norm (George Wendt); Daphne (Jane Leeves) becomes captivated by Cliff's long-winded stories; and Carla (Rhea Perlman) helps Niles (David Hyde Pierce) get even with Frasier for embarrassing him in public. This episode was written by Rhea Perlman's sister Heide Perlman and features a cameo appearance by the ladies' father Philip Perlman. ~ Rovi