Background: Steve Wozniak was born in San Jose, California, the son of Francis Jacob "Jerry" Wozniak (1925-1994) from Michigan and Margaret Louise Wozniak (nee Kern) (1923-2014) from Washington State. He graduated from Homestead High School in 1968. The name on Wozniak's birth certificate is "Stephan Gary Wozniak", but Steve's mother said that she intended it to be spelled "Stephen", which is what he uses. Wozniak has mentioned his surname being Polish and Ukrainian and spoken of his Polish descent, but stated that he does not know the origin of some other people with the Wozniak surname because he is "no heritage expert".
Context: After seeing her stand-up performance in Saratoga, California, Wozniak began dating comedian Kathy Griffin. Together, they attended the 2007 Emmy Awards, and subsequently made many appearances on the fourth season of her show Kathy Griffin: My Life on the D-List. Wozniak is on the show as her date for the Producers Guild of America award show. However, on a June 19, 2008 appearance on The Howard Stern Show, Griffin confirmed that they were no longer dating and decided to remain friends. Wozniak portrays a parody of himself in the first episode of the television series Code Monkeys; he plays the owner of Gameavision before selling it to help fund Apple. He later appears again in the twelfth episode when he is in Las Vegas at the annual Video Game Convention and sees Dave and Jerry. He also appears in a parody of the "Get a Mac" ads featured in the final episode of Code Monkeys second season. Wozniak is also interviewed and featured in the documentary Hackers Wanted and on BBC. Wozniak competed on Season 8 of Dancing with the Stars in 2009 where he danced with Karina Smirnoff. Despite Wozniak and Smirnoff receiving 10 combined points from the three judges out of 30, the lowest score of the evening, he remained in the competition. He later posted on a social networking site that he felt that the vote count was not legitimate and suggested that the Dancing with the Stars judges had lied about the vote count to keep him on the show. After being briefed on the method of judging and vote counting, he retracted and apologized for his statements. Despite suffering a pulled hamstring and a fracture in his foot, Wozniak continued to compete, but was eliminated from the competition on March 31, with a score of 12 out of 30 for an Argentine Tango. On September 30, 2010, he appeared as himself on The Big Bang Theory season 4 episode "The Cruciferous Vegetable Amplification". While dining in The Cheesecake Factory where Penny works, he is approached by Sheldon via telepresence on a Texai robot. Leonard tries to explain to Penny who Wozniak is, but she says she already knows him from Dancing with the Stars. On September 30, 2013, he appeared along with early Apple employees Daniel Kottke and Andy Hertzfeld on the television show John Wants Answers to discuss the movie Jobs.
Question: what did he do on her show?

Answer:
dating comedian Kathy Griffin.