Jean Shepherd, who has been described as a philosopher, wit, egotist, intellectual and humorist will speak at a College Hour program at noon today at Union Junior College in the theatre of the Campus Center. Mr. Shepherd is heard Monday through Friday, from 10:15 to 11 p.m., on WOR (710 on the radio dial), in programs of informal conversations, verbal essays and dramatic sketches. His topics range from comic books to cravats, baseball to babies, and kite flying to kissing. The College Hour programs are sponsored by the Day Session Student Council. John Judson, council president, said the public is invited to hear Mr. Shepherd's lecture