The final episode of That '70s Show was emotional for the cast, particularly for Laura Prepon and Mila Kunis. Prepon struggled during the filming and caused delays, while Kunis cried and wanted someone to hold her. Danny Masterson was also emotional, but Wilmer Valderrama had a different outlook and was ready to move on. Fans were relieved when Topher Grace returned for the final episode. However, Valderrama initially had doubts about reprising his role as Fez due to his promise to move on from the character.