SAY HELLO TO . . . PAT O’MALLEY— who will convulse you tonight on the Alec Templeton program with his dialect monologue. Pat is an Irishman, went to college in London, and organized a band in his undergraduate days. After college, the band held together for a while, then Pat became a night club singer until Jack Hylton discovered him and brought him to America. It was over here that he first began his monologues.