From 1971 to 1974, Van Dyke starred in an unrelated sitcom called The New Dick Van Dyke Show in which he portrayed a local television talk show host. Although the series was developed by Carl Reiner and starred Hope Lange as his wife, and he received a Golden Globe nomination for his performance, the show was less successful than its predecessor, and Van Dyke pulled the plug on the show after just three seasons. In 1973, Van Dyke voiced his animated likeness for the October 27, 1973 installment of Hanna-Barbera's The New Scooby-Doo Movies, "Scooby-Doo Meets Dick Van Dyke," the series' final first-run episode. The following year, he received an Emmy Award nomination for his role as an alcoholic businessman in the television movie The Morning After (1974). Van Dyke revealed after its release that he had recently overcome a real-life drinking problem. He admits he was an alcoholic for 25 years. That same year he guest-starred as a murderous photographer on an episode of Columbo, Negative Reaction. Van Dyke returned to comedy in 1976 with the sketch comedy show Van Dyke and Company, which co-starred Andy Kaufman and Super Dave Osborne. Despite being canceled after three months, the show won an Emmy Award for Outstanding Comedy-Variety Series. After a few guest appearances on the long-running comedy-variety series The Carol Burnett Show, Van Dyke became a regular on the show, in the fall of 1977. However, he only appeared in half of the episodes of the final season. For the next decade he appeared mostly in TV movies. One atypical role was as a murdering judge on the second episode of the TV series Matlock in 1986 starring Andy Griffith. In 1987, he guest-starred in an episode of Airwolf, with his son Barry Van Dyke, who was the lead star of the show's fourth and final season on USA Network. In 1989, he guest-starred on the NBC comedy series The Golden Girls portraying a lover of Beatrice Arthur's character. This role earned him his first Emmy Award nomination since 1977.
There was interest from a dealer in Paris early in 1885. Theo asked Vincent if he had paintings ready to exhibit. In May, Van Gogh responded with his first major work, The Potato Eaters, and a series of "peasant character studies" which were the culmination of several years of work. When he complained that Theo was not making enough effort to sell his paintings in Paris, his brother responded that they were too dark, and not in keeping with the bright style of Impressionism. In August his work was publicly exhibited for the first time, in the shop windows of the dealer Leurs in The Hague. One of his young peasant sitters became pregnant in September 1885; Van Gogh was accused of forcing himself upon her, and the village priest forbade parishioners to model for him.
Van Dyke took a more dramatic turn in the 1990s. He starred in the popular crime drama Diagnosis Murder alongside his real-life son, Barry Van Dyke. Debuting in 1993, the series featured Van Dyke as Dr. Mark Sloan, a medical professional who helped the police solve crimes. The series ended in 2001, but Van Dyke didn't stay away from the small screen for long. He played another amateur detective in a series of TV movies, beginning with 2006's Murder 101. That same year, the actor appeared in the Ben Stiller comedy Night at the Museum.
In April 2013, Van Dyke revealed that for seven years he had been experiencing symptoms of a neurological disorder, in which he felt a pounding in his head whenever he lay down; but despite his undergoing tests, no diagnosis had been made. He had to cancel scheduled appearances due to fatigue from lack of sleep because of the medical condition. In May 2013, he tweeted that it seemed his titanium dental implants may be responsible.
Van Dyke left high school in 1944, his senior year, intending to join the United States Army Air Forces for pilot training during World War II. Denied enlistment several times for being underweight, he was eventually accepted for service as a radio announcer before transferring to the Special Services and entertaining troops in the continental United States. He received his high school diploma in 2004 at the age of 78.