Filmography
| Role | Title | Year | Character |
|---|---|---|---|
| Writer | Fistaszki - wersja kinowa | 2015 | |
| Writer | A Charlie Brown Christmas | 1965 | |
| Writer | It's the Great Pumpkin, Charlie Brown | 1966 | |
| Writer | A Charlie Brown Thanksgiving | 1973 | |
| Writer | It's the Easter Beagle, Charlie Brown | 1974 | |
| Writer | It's Christmastime Again, Charlie Brown | 1992 | |
| Writer | A Boy Named Charlie Brown | 1969 | |
| Writer | Be My Valentine, Charlie Brown | 1975 | |
| Writer | Charlie Brown's Christmas Tales | 2002 | |
| Writer | I Want a Dog for Christmas, Charlie Brown | 2003 | |
| Writer | Szerokiej drogi, Charlie Brown i nie wracaj | 1980 | |
| Writer | Race for Your Life, Charlie Brown | 1977 | |
| Writer | Happy New Year, Charlie Brown | 1986 | |
| Writer | You're Not Elected, Charlie Brown | 1972 | |
| Writer | Charlie Brown w świecie magii | 1981 | |
| Writer | Charlie Brown's All-Stars | 1966 | |
| Writer | Why, Charlie Brown, Why? | 1990 | |
| Writer | She's a Good Skate, Charlie Brown | 1980 | |
| Writer | It Was a Short Summer, Charlie Brown | 1969 | |
| Writer | It's Arbor Day, Charlie Brown | 1976 | |
| Actor | A Boy Named Charlie Brown | 1963 | Himself |
| Producer | A Boy Named Charlie Brown | 1963 | |
| Writer | Play It Again, Charlie Brown | 1971 | |
| Writer | Life Is a Circus, Charlie Brown | 1980 | |
| Writer | Is This Goodbye, Charlie Brown? | 1983 | |
| Writer | You're in the Super Bowl, Charlie Brown | 1994 | |
| Writer | You're in the Super Bowl, Charlie Brown | 1994 | |
| Writer | Lucy Must Be Traded, Charlie Brown | 2003 | |
| Actor | It's Your 50th Christmas Charlie Brown | 2015 | Himself (archive footage) |
| Writer | Peanuts in Space: Secrets of Apollo 10 | 2019 | |
| Writer | What Have We Learned, Charlie Brown? | 1983 | |
| Writer | It's an Adventure, Charlie Brown | 1983 | |
| Crew | It's an Adventure, Charlie Brown | 1983 | |
| Crew | You're the Greatest, Charlie Brown | 1979 |