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.
Dominic Treadwell-Collins
Treadwell-Collins stood down from his "EastEnders" role on 25 June 2010, becoming head of development at Kudos' Lovely Day production company. The company is run by former "EastEnders" executive producer Diederick Santer, who commented: "Dominic is a brilliant and original talent, bursting with great ideas and gripping stories. Many of "EastEnders" best storylines and characters of the last few years have come directly from his imagination and design, and he played an integral part in conceiving and plotting the hugely successful 25th anniversary episodes. I'm delighted to be resuming our creative partnership at Lovely Day." Treadwell-Collins stated: "I have had an amazing time at "EastEnders" and I couldn't have dreamed of a better place to work. Working on "EastEnders" has enabled me to create some fantastic storylines and characters that have been received so well but after four-and-a-half years of life in Walford, I feel that it is time to move on and try something new."