Alan Reed ALAN REED, who plays the role of Pasquale on Life With Luigi (CBS, Sundays, at 10 P.M., EDT), has done spots on virtually every radio program in New York and Hollywood, including a dozen or more daytime serials. His best known roles have been Falstaff Openshaw, poet, on the Fred Allen Show , Clancy the cop on Duffy’s Tavern and Mr. Weamish on the Baby Snooks Show. Today his voice is heard in twenty-twwo dialects on almost all of major shows. Alan Reed was born in New York and started his preparations for the theater during grammar school days when, as Shylock in “The Merchant of Venice.” he caught his beard in the stage door. Quick thinking made him play it that way ever since. After extracting as much humor as he could from prep school. Reed moved his 210 pounds to Columbia University, where he became the intercollegiate broad-jumping champion wrestler and writer of college plays, just to prove that a brawny arm could swing a delicate pen Reed considere