Film & TV List | Role | Media |
 |
| Grey's Anatomy (2012) | Marion Steiner | TV Show |
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| Safety Not Guaranteed (2012) | Bridget | Movie |
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| FCU: Fact Checkers Unit (2011) | Jordache | TV Show |
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| How to Be a Gentleman (2011) | Janet | TV Show |
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| Dicki (2011) | Dicki Ferguson | TV Show |
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| Raising Hope (2011) | Tanya | TV Show |
|
| Modern Family (2011) | Tracy | TV Show |
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| I Confess (2010) | Mary Lynn Rajskub | TV Movie |
|
| Royal Pains (2010) | Blake | TV Show |
|
| 24 (2003–2010) | Chloe O'Brian | TV Show |
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| Backwash (2010) | Narrator | TV Show |
|
| It's Always Sunny in Philadelphia (2009) | Gail the Snail | TV Show |
|
| Julie & Julia (2009) | Sarah | Movie |
|
| The Flight of the Conchords (2009) | Art Garfunkel fanatic | TV Show |
|
| The Middleman (2008) | Dr. Gibbs | TV Show |
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| Sunshine Cleaning (2008) | Lynn | Movie |
|
| Human Giant (2007) | Mindy | TV Show |
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| The Simpsons (2007) | Chloe O'Brian | TV Show |
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| Humble Pie (2007) | Peggy Orbison | Movie |
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| Freak Show (2006) | Mary Lynn | TV Show |
|
| Grilled (2006) | Renee | Movie |
|
| Gilmore Girls (2002–2006) | 'Girlfriend' in Kirk's Film
/
Troubadour | TV Show |
|
| Firewall (2006) | Janet Stone | Movie |
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| Little Miss Sunshine (2006) | Pageant Assistant Pam | Movie |
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| Kelsey Grammer Presents: The Sketch Show (2005) | Various | TV Show |
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| Mysterious Skin (2004) | Avalyn Friesen | Movie |
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| Helter Skelter (2004) | Lynette 'Squeaky' Fromme | TV Movie |
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| Home Movies (2004) | Penny | TV Show |
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| Good Morning, Miami (2003) | Hollis | TV Show |
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| Legally Blonde 2: Red, White & Blonde (2003) | Reena Giuliani | Movie |
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| Claustrophobia (2003) | Grace | Movie |
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| The King of Queens (2002) | Priscilla Stasna | TV Show |
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| Sweet Home Alabama (2002) | Dorothea | Movie |
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| Punch-Drunk Love (2002) | Elizabeth | Movie |
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| Just Shoot Me! (2001) | Penny | TV Show |
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| Late Friday (2001) | Girls Guitar Club
/
Mary Lynn Margolis | TV Show |
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| The Downer Channel (2001) | Various | TV Show |
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| The Anniversary Party (2001) | Mary-Lynn | Movie |
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| Storytelling (2001) | Melinda (segment Fiction) | Movie |
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| Dude, Where's My Car? (2000) | Zelmina - Cult Member | Movie |
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| Sunset Strip (2000) | Eileen | Movie |
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| Veronica's Closet (1999–2000) | Chloe | TV Show |
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| Road Trip (2000) | Blind Brenda | Movie |
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| Man on the Moon (1999) | Friday's Mary | Movie |
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| Magnolia (1999) | Janet, Frank's Assistant (voice) | Movie |
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| Shasta McNasty (1999) | Diana | TV Show |
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| Tracey Takes On... (1999) | n/a | TV Show |
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| The Army Show (1998) | Sgt. Madeline Tipton
/
Sgt. Tipton | TV Show |
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| The Thin Pink Line (1998) | Suzy Smokestack | Movie |
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| Bury Me in Kern County (1998) | Amanda | Movie |
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| The Larry Sanders Show (1996–1998) | Mary Lou Collins | TV Show |
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| NewsRadio (1998) | Waitress | TV Show |
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| The Weird Al Show (1997) | Weather Woman | TV Show |
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| Over the Top (1997) | Linda | TV Show |
|
| Who's the Caboose? (1997) | Cheeseball Eater | Movie |
|
| Mr. Show with Bob and David (1995–1996) | Various
/
Various Characters | TV Show |
|
| The Truth About Cats & Dogs (1996) | Female Radio Caller (voice) | Movie |
|
| Mr. Show with Bob and David: Fantastic Newness (1996) | Various Characters | TV Movie |
|
Film & TV List | Role | Media |
|
| The L.A. Complex (2012) | Herself | TV Show |
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| The Late Late Show with Craig Ferguson (2010–2011) | Herself | TV Show |
|
| Lopez Tonight (2011) | Herself | TV Show |
|
| Conan (2010) | Herself | TV Show |
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| The Tonight Show with Jay Leno (2006–2010) | Herself | TV Show |
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| Late Night with Jimmy Fallon (2010) | Herself | TV Show |
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| The Soup (2010) | Herself | TV Show |
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| The Tonight Show with Conan O'Brien (2009–2010) | Herself | TV Show |
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| The Wanda Sykes Show (2009) | Herself | TV Show |
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| Entertainment Tonight (2009) | Herself | TV Show |
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| Late Night with Conan O'Brien (2006–2009) | Herself | TV Show |
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| Free Radio (2008) | Herself | TV Show |
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| Late Show with David Letterman (2007) | Herself | TV Show |
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| Last Call with Carson Daly (2006) | Herself | TV Show |
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