(CNN) Arte Johnson, a master of sketch comedy who won an Emmy for the hit series "Laugh-In," died Wednesday of heart failure, according to a family representative. He was 90.

Johnson died in Los Angeles.

The irreverent series formally known as " Rowan & Martin's Laugh-In" became an unexpected hit for NBC, and Johnson was among its more gifted and versatile performers. His German soldier prompted the catch phrase "Very interesting," and his dirty old man sketch, with Ruth Buzzi, was notorious for causing his co-stars to break out in laughter. (In a recent "Laugh-In" tribute that played on Netflix, Johnson was shown in outtakes making guest Don Rickles laugh so hard that he pleaded with Johnson to "give me a break.")

Johnson spent only four seasons on "Laugh-In," winning an Emmy in 1969. He appeared in comic TV roles before and after the series, without approaching the success of "Laugh-In." Other credits included an episode of "The Twilight Zone," as well as co-starring as Dracula's servant Renfield in the 1979 comedy "Love at First Bite," starring George Hamilton.

"Laugh-In" producer George Schlatter said he looked for "funny and magic people" when casting the show, recalling in a 50th anniversary interview with THR that Johnson was "selling suits" when he found him. The producer said Johnson first did the German soldier on TV during an appearance with Bob Hope, riffing on the comic's famous USO tours by coming out and saying, "'Every Christmas we waited for you.' Hope didn't know what to think of him."

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