Penny Marshall
Garry Marshall, creator and then part-time writer for "Happy Days", cast Marshall and Cindy Williams to guest on an episode of the show. The installment, titled "A Date with Fonzie", aired on November 11, 1975 and introduced the characters Laverne DeFazio and Shirley Feeney (played by Marshall and Williams, respectively). In that episode, Laverne and Shirley were a pair of wisecracking brewery workers who were dates for Fonzie (Henry Winkler) and Richie (Ron Howard). The pair were such a hit with the studio audience that Garry Marshall decided to co-create and star them in a successful spinoff, "Laverne & Shirley" (1976–1983). The characters of Laverne and Shirley appeared in five more episodes of "Happy Days". In 1982 at the beginning of "Laverne & Shirley"s eighth season, Williams left the show due to her pregnancy. Marshall continued with the show, but it was canceled after the season's final episode aired in May 1983.
A. D. Miles
Miles is a regular on David Wain's internet series "Wainy Days" and the creator and star of "Horrible People", a show on the website My Damn Channel. He served as the head writer on "Late Night with Jimmy Fallon", and often appeared in the show's comedy sketches, before moving with Fallon to "The Tonight Show". Miles is a frequent collaborator with comedian and director David Wain and the comedy trio Stella (of which Wain is a member), appearing in the Stella shorts and the 2005 "Stella" TV series, and acting in many of Wain's projects ("Wet Hot American Summer", "", "The Ten", "Role Models", "Childrens Hospital", "Wainy Days") and in Stella member Michael Showalter's "The Baxter". As of season five, Miles is credited as a "consulting producer" on "Arrested Development".