Comedian David Brenner passed away Saturday, a spokesman for his family said. He was 78. Jeff Abraham, who was Brenner’s publicist, said the “Tonight Show” favorite died Saturday afternoon at his home in New York City. The gangly, toothy Brenner made more than 150 appearances as a guest and substitute host on Johnny Carson’s “Tonight Show,” starting in the 1970s. The exposure turned the former documentary filmmaker into a hot comedian. Brenner was a regular on other TV talk shows and game shows and starred in four HBO comedy specials. He also briefly hosted his own syndicated talk show in...