Having already appeared as a musical guest and then host of Saturday Night Live, McKean joined the cast from 1994 to 1995. At the age of 46, he was the oldest person ever to join the SNL cast at the time (later surpassed by Leslie Jones, who joined in 2014 at age 47), one of a handful of SNL cast members to appear on the show before becoming a cast member (joining the likes of Billy Crystal, Denny Dillon, Ann Risley, and Rob Riggle), and the only one to be a musical guest and a host before becoming a cast member. During this time, he also released a video follow up to Spinal Tap, played the villainous Mr. Dittmeyer in The Brady Bunch Movie, and played the boss Gibby in the HBO series Dream On. After leaving Saturday Night Live, McKean spent a lot of time doing children's fare, voicing various TV shows and movies.