 Homer enters the Cheers bar in a scene which is a parody of a typical episode of the comedy series Cheers . All of the speaking characters are voiced by the actors who played them in Cheers . Ironically , Frasier Crane remains silent despite being played by Simpsons veteran Kelsey Grammer , the voice of Sideshow Bob . Marge 's dream sees her in the role of Mrs. Robinson from Lost in Space , while Homer plays Dr. Smith . The scene where Marge and Jacqueline Bouvier duck down when a biplane shoots at them in a cornfield is a parody of Alfred Hitchcock 's film North by Northwest . 
 Homer <a href='uninflect' title='1'><mark>enters</mark></a> the Cheers bar in a scene which <a href='drop_aux' title='2'><mark>is</mark></a>a parody of a typical episode of the comedy series Cheers . All of the speaking characters are voiced by the actors <a href='null_relcl' title='3'><mark>who</mark></a>played them in Cheers . Ironically , Frasier Crane <a href='uninflect' title='4'><mark>remains</mark></a> silent despite being played by Simpsons veteran Kelsey Grammer , the voice of Sideshow Bob . Marge <a href='null_genetive' title='5'><mark>'s</mark></a>dream <a href='uninflect' title='6'><mark>sees</mark></a> her in the role of Mrs. Robinson from Lost in Space , while Homer <a href='uninflect' title='7'><mark>plays</mark></a> Dr. Smith . The scene where Marge and Jacqueline Bouvier duck down when a biplane <a href='uninflect' title='8'><mark>shoots</mark></a> at them in a cornfield <a href='drop_aux' title='9'><mark>is</mark></a>a parody of Alfred Hitchcock <a href='null_genetive' title='10'><mark>'s</mark></a>film North by Northwest . 
Homer enter the Cheers bar in a scene which a parody of a typical episode of the comedy series Cheers . alll of da speaking characters are voiced by the actors played them in Cheers . Ironically , Frasier Crane remain silent despite being played by Simpsons veteran Kelsey Grammer , tdavoice of Sideshow Bob . Marge  dream see her in thdaole of Mrs. Robinson from Lost in Space , while Homer play Dr. Smith . Thedaene where Marge and Jacqueline Bouvier duck dwn when a biplane shoot at em in a cornfield a parody of Alfred Hitchcock  film North by Northwest .