Through the first 25 years, Sesame Street has changed in many ways. Each year brought a new change, some were big changes, some were minor and hardly noticeable. 1969: The show premires 1970: Oscar is Green, Cookie and Grover have names 1971: Big Bird meets Snuffy, 6 new humans join the show. 1972: Snuffy's eyes go from yellow to white, 3 of the 6 humans introduced the year before are gone Molly the mail Lady, Rafeal and Tom. David takes Tom's place and starts working at Hooper's Store 1973: Biff and Sully make their premire, Don Music makes his premire. 1974: Roscoe Orman joins the cast as Gordon. 1975: Gladys The Cow makes her debut. 1976: The episode number is now shown at the beggining of each show. Olivia and Buffy join the human cast. 1977: Linda joins the cast full time. 1978: Barkley makes his debut. Brian Meehl becomes a Muppeteer performing Barkley and anything Muppets like the letter X in the Mystery letter show. 1979: Telly makes his debut as the Television Monster, The Fix it Shop gets rebuilt, and Bruno makes his debut. 1980: Forgetful Jones makes his debut. Deena and Peal join the show as short lived female Monsters. Maria becomes Luis's partner at the Fix it Shop. Frank Oz and Jim Henson's charachters stop appearing in the main storylines and are only seen in off the street sketches. 1981: Richard Hunt takes over Forgetful Jone's voice. 1982: Big Bird gets a new look, Grungetta joins the show as Oscar's Girlfriend. Dr. Nobel Price joins the show. 1983: Mr. Hooper dies, The show no longer shows the cast holding up the CTW sign at the end. Shelly turtle makes his debut. 1984: Brian Meehl leaves the show and Marty Robbinson takes over Telly, while Pam Arcerio takes over Grungetta, and Kevin Clash takes over Dr. Nobel Price. Uncle Wally joins the human cast 1985: Elmo joins the show as a full time cast member, Snuffy is finally seen by all the adults. 1986: Leo the Party Monster makes his debut, Gina joins the human cast as a teenage girl who is a student of Gordons. 1987: Maria and Luis fall in Love, Snuffy's little sister Alice joins the show, Gina starts working at Hooper's Store. 1988: Maria and Luis get married, Olivia leaves the show, The colored Barrells in Big Bird's nest area are gone. They start having teen numbers as numbers of the day and not just 1-12 and 20. 1989: Maria gives Birth to Gabi, Preston Rabbit makes his debut, Mr. Handford takes David's place at the store. 1990: Jim Henson died. No new Ernie material is shown, another actor takes over Mr. Handford's role. Lillian joins the show. 1991: Baby Bear and Rosita make their debuts, Savion joins the show. 1992: The Classic theme is replaced with a new one. Uncle Wally leaves the show. 1993: The show expands and goes around the corner. They switch to a new set with brighter colors. New Music replaces the classic Harmonica music. Lillian is gone, but a lot of new humans are there like angela and Jamal, Celina, Ruthie, and a new orange female Monster named Zoe. Steve Whitmire takes over as the "New Ernie"