Splits, My Favorite Martian, Rainbow Brite, Darkwing Duck, Happily Ever After, Problem Child, Spider-Man, A Bug's Life, Buzz Lightyear of Star Command and Toy Story 2. He also did voiceover work in an episode of the animated Superman series. In multiple episodes of the 1995–1997 cartoon series Freakazoid!, Harris reprised the cowardly Smith character and dialogue under the name "Professor Jones," uttering Smith's catchphrase "Oh, the pain!" Emphasizing the target of the parody, numerous characters would ask him, "Weren't you on a TV show with a robot?" In 2001, a year prior to his death, he recorded voice work for the animated theatrical short The Bolt Who Screwed Christmas. The film, Harris's last work, was released posthumously in 2009. Lost in Space reunion appearances In 1990, Harris reunited with the cast of Lost in Space in a filmed celebration of the 25th anniversary of the series' debut, at an event attended by more than 30,000 fans. Harris made a number of other convention appearances with other cast members of Lost in Space, including a 1996 appearance at Disney World. On June 14, 1995, Harris and other cast members appeared in The Fantasy Worlds of Irwin Allen, a television tribute to Irwin Allen, the creator of Lost in Space, who had died in 1991. Harris refused to make a cameo appearance in the 1998 motion picture version of Lost in Space, unlike many of his co-stars in the original series. He announced, "I've never played a bit part in my life and I'm not going to start now!" However, he did make promotional appearances for the film: Harris reprised his role as Dr. Smith in the one-hour television special Lost in Space Forever, and Harris and the rest of the surviving television cast appeared on the inside cover of an issue of TV Guide. In April 1998, Harris appeared as a guest on the talk show Biography, on which Harris fondly reminisced about his Lost in Space days, admitting he would stay up nights thinking of new alliterative insults for The Robot ("bellicose bumpkin," "bubble-headed booby") because he enjoyed the interaction so much. For an appearance by Harris, talk show host Conan O'Brien brought one of his characters, Pimp-Bot 5000 (a "robot pimp"; half 1950s’ robot, half 1970s’ street pimp), onto the set, and Harris went into character as Dr. Smith and proceeded to insult Pimp-Bot. Shying away from his usual