Arte Johnson has died of heart failure at the age of 90. He was best known for his Rowan & Martin’s Laugh-In character, Wolfgang. A German soldier who thought World War 2 was still happening, his trademark “Very interesting…” outlived the show and even popped up on The Simpsons. Johnson won an Emmy for Laugh-In work in 1969, and was nominated for two more. He made guest appearances on The Twilight Zone, Bewitched, and Murder She Wrote. Johnson also had an extensive voice acting career, providing voices on Animaniacs, Swat Kats, and both the Smurfs and their bitter rivals the Snorks. He is survived by his wife and brother.