 In the 1970s, McCann's life and career shifted west, and he relocated to Los Angeles.He made frequent guest appearances on network television shows including "Little House on the Prairie", "Bonanza", "Columbo", "The Rockford Files" and "The Bob Newhart Show".He appeared in the 1973 made-for-TV movie "The Girl Most Likely to..." and was a regular on Norman Lear's "All That Glitters".