 Additionally , Homer has a Starland Vocal Band tattoo on his arm , Bart considers buying a Steve Allen " ultimate pog " , while the music just before Bart 's operation is a parody of the theme music of ER . Bleeding Gums appears on an episode of The Cosby Show , a reference to Bill Cosby often getting jazz musicians he liked to appear on the show ; in the episode , Cosby is voiced by The Simpsons regular Dan Castellaneta . Also , Cosby is heard to say that jazz was like Jello Pudding Pops , Kodak Film or New Coke , products which Cosby has advertised on television . Lionel Hutz 's " crack team of lawyers " Robert Shaporo and Albert Dershman are parodies of Robert Shapiro and Alan Dershowitz , two of the defense attorneys at the O. J. Simpson murder case . The three drive away in a white pickup truck , similar to the Ford Bronco that Al Cowlings and O.J. Simpson drove in their televised low @-@ speed pursuit before Simpson 's arrest . 
