| Year | Title | Role | Notes |
| 1992 | You Wrote It, You Watch It | Various Characters | Also writer |
| 1993–1995 | The State | Various | 26 episodes; also writer and creator |
| 1997 | Viva Variety | Agatha Laupin | 16 episodes; also writerNominated—CableACE Award for Outstanding Actress in a Comedy Series |
| 1998 | Hercules | Gaia (voice) | Episode: "Hercules and the Prince of Thrace" |
| 2000 | Hey Neighbor | Dotty | TV pilot |
| The Weekenders | Tish's Mom (voice) | Episode: "To Be or Not to Be" |
| Buzz Lightyear of Star Command | Gravitina (voice) | 5 episodes |
| 2001 | Clerks | Mother (voice) | 2 episodes |
| Lloyd in Space | Sirenia's Mother (voice) | Episode: "Girl From The Center of the Universe" |
| The Legend of Tarzan | (voice) | Episode: "Tarzan and the Silver Screen" |
| 2001–2002 | The Ellen Show | Pam | 16 episodes |
| 2001–2002 | Invader Zim | Various (voice) | 2 episodes |
| 2002 | What I Like About You | Lisa Lillien | Episode: "Pilot" |
| 2002–2004 | Teamo Supremo | Electronica (voice) | 2 Episodes |
| 2002–2006 | Still Standing | Marion Fitzsimmons | 5 episodes |
| 2002–2007 | Kim Possible | Bebes (voice) | 5 episodes |
| 2003 | Titletown | | TV pilot |
| 2003–2009,2020–2022 | Reno 911! | Deputy Trudy Wiegel | Also writer and creatorNominated—Primetime Emmy Award for Outstanding Short Form Comedy or Drama Series (2020–21)Nominated—Primetime Emmy Award for Outstanding Actress in a Short Form Comedy or Drama Series (2020–21) |
| 2004 | Brandy & Mr. Whiskers | Mama Croc (voice) | 2 episodes |
| Cheap Seats: Without Ron Parker | Alice Karp | Episode: "Putt-Putt" |
| 2006 | Lovespring International | Beatrice | Episode: "The Psychic" |
| 2007 | Wainy Days | Kerri | Episode: "Walking Tour" |
| 2008 | Pushing Daisies | Alexandria | Episode: "Oh Oh Oh... It's Magic" |
| 2010 | Adventure Time | Various voices | 2 episodes |
| Tax Man | Bethany | TV pilot |
| Party Down | Aviatrix | Episode: "Not on Your Wife Opening Night" |
| Pretend Time | Mrs. Hampton | Episode: "Mudslide Junction" |
| 2010–2013 | Childrens Hospital | Herself / Dutch Tourist | Episode: "Give a Painted Brother a Break" |
| 2011 | Raising Hope | Gwen | Episode: "Everybody Flirts... Sometimes" |
| 2011–2012 | NTSF:SD:SUV:: | 4-Sight | 2 episodes |
| 2012 | Are You There, Chelsea? | Olga | Episode: "Surprise" |
| Counter Culture | Billie Haynes | TV pilot |
| Anger Management | Mel | 2 episodes |
| Burning Love | Jay | 2 episodes |
| Comedy Bang! Bang! | Meryl Hmm | Episode: "Weird Al Yankovic Wears a Hawaiian Shirt" |
| Sullivan & Son | Jo | Episode: "The Prodigal Sister" |
| It's Always Sunny in Philadelphia | Therapist | Episode: "The Gang Gets Analyzed" |
| 2013 | The New Normal | Dr. Howell | Episode: "Dog Children" |
| Newsreaders | Tina Barry | Episode: "CCSI: Boston" |
| Key & Peele | Person at People Park | Episode: "Pussy on the Chainwax" |
| 2014 | New Girl | Captain Jan Nortis | Episode: "Cruise" |
| Us & Them | Gwen | 7 episodes |
| 2014–2015 | American Dad! | Parole Officer / Rhonda Hughart (voice) | 2 episodes |
| 2015 | Wet Hot American Summer: First Day of Camp | Real Estate Agent | Episode: "Auditions" |
| 2015–2017 | Harvey Beaks | Miriam (voice) | 39 episodes |
| 2016 | Angie Tribeca | Laurie Partridge | Episode: "Ferret Royale" |
| Animals. | Leslie (voice) | Episode: "Rats." |
| Teachers | Mrs. Barkley | Episode: "The Last Day" |
| Bajillion Dollar Propertie$ | Mrs. Gullier | Episode: "Amir Is Glenn's Mentor" |
