20 ACTORS I'M ALWAYS HAPPY TO SEE GUEST STARRING ON A TV SHOW

Seeing these faces on TV always makes me happy. Most of these are comedians and comedy shows. In the descriptions I've put all the shows they guest starred on that I've seen and other notable shows. Number one aside, this isn't really ranked (though maybe a little? I'm not even sure).
  1. 1.
    Jason Mantzoukas
    Guest starred on: Parks and Recreation, Community, Kroll Show, Comedy Bang! Bang!, Review, Broad City, Playing House, Modern Family, Bob's Burgers, The Greatest Event in Television History, NTSF:SD:SUV, Childrens Hospital, Drunk History, Transparent, and more.
  2. 2.
    Keegan-Michael Key
    Guest starred on: Parks and Recreation, Modern Family, Angie Tribeca, Fargo, The Hotwives of Las Vegas, Rick and Morty, Bob's Burgers, With Bob & David, Bojack Horseman, Childrens Hospital, It's Always Sunny in Philadelphia, The Middle, Robot Chicken, How I Met Your Mother, The League, Wilfred, and more.
  3. 3.
    Jordan Peele
    Guest starred on: The Mindy Project, Fargo, Modern Family, Bob's Burgers, Kroll Show, Drunk History, Childrens Hospital, Ricky and Morty, Wet Hot American Summer: First Day of Camp, Comedy Bang! Bang!, and more.
  4. 4.
    Jenny Slate
    Guest starred on: Parks and Recreation, Bob's Burgers, Kroll Show, Brooklyn Nine Nine, House of Lies, Hello Ladies, Girls, Bored to Death, and more.
  5. 5.
    Bill Hader
    Guest starred on: Brooklyn Nine Nine, Inside Amy Schumer, The Mindy Project, Bob's Burgers, South Park, Portlandia, Drunk History, The Office, The Simpsons, NTSF:SD:SUV, 30 Rock, and more.
  6. 6.
    Megan Mullally
    Guest starred on: Parks and Recreation, Bob's Burgers, 30 Rock, Happy Endings, The Greatest Event in Television History, Up All Night, How I Met Your Mother, Seinfeld, and more.
  7. 7.
    Nick Offerman
    Guest starred on: Brooklyn Nine Nine, Fargo, You, Me, And the Apocalypse, Childrens Hospital, The Simpsons, Bob's Burgers, Kroll Show, Drunk History, Will & Grace, and more.
  8. 8.
    Jon Hamm
    Guest starred on: 30 Rock, Unbreakable Kimmy Schmidt, Parks and Recreation, Childrens Hospital, Toast of London, Wet Hot American Summer: First Day of Camp, Bob's Burgers, The Greatest Event in Television History, The Simpsons, and more.
  9. 9.
    John Cho
    Guest starred on: 30 Rock, New Girl, The Mindy Project, BoJack Horseman, NTSF:SD:SUV, Childrens Hospital, How I Met Your Mother, House M.D., and more.
  10. 10.
    Rachel Dratch
    Guest starred on: 30 Rock, Parks and Recreation, Difficult People, Last Week Tonight with John Oliver, Inside Amy Schumer, Bob's Burgers, Broad City, The Middle, Up All Night, and more.
  11. 11.
    Patton Oswalt
    Guest starred on: Parks and Recreation, Community, Brooklyn Nine Nine, Portlandia, Veep, Modern Family, Marvel's Agents of S.H.I.E.L.D., BoJack Horseman, Drunk History, Rick and Morty, Bob's Burgers, Jon Benjamin has a Van, The Simpsons, Bored to Death, and more.
  12. 12.
    Adam Scott
    Guest starred on: Angie Tribeca, Comedy Bang! Bang!, Drunk History, Burning Love, NTSF:SD:SUV, Childrens Hospital, Eastbound and Down, and more.
  13. 13.
    Aubrey Plaza
    Guest starred on: Portlandia, Castle, 30 Rock, Drunk History, NTSF:SD:SUV, Criminal Minds, and more.
  14. 14.
    Kumail Nanjiani
    Guest starred on: Community, The X-Files, Portlandia, Bob's Burgers, The Grinder, Broad City, Archer, Inside Amy Schumer, Kroll Show, Key and Peele, Drunk History, Veep, Burning Love, and more.
  15. 15.
    Chelsea Peretti
    Guest starred on: Parks and Recreation, Louie, Kroll Show, Key and Peele, The Greatest Event in Television History, Comedy Bang! Bang!, Drunk History, and more.
  16. 16.
    Nick Kroll
    Guest starred on: Parks and Recreation, Brooklyn Nine Nine, Unbreakable Kimmy Schmidt, Community, Portlandia, Comedy Bang! Bang!, The Simpsons, New Girl, Childrens Hospital, Drunk History, Burning Love, The Greatest Event in Television History, and more.
  17. 17.
    Hannibal Buress
    Guest starred on: Broad City, 30 Rock, The Mindy Project, Kroll Show, Bob's Burgers, Louie, Childrens Hospital, The Jim Gaffigan Show, and more.
  18. 18.
    June Diane Raphael
    Guest starred on: Parks and Recreation, New Girl, Inside Amy Schumer, Drunk History, Kroll Show, The League, Happy Endings, The Hotwives of Las Vegas, Party Down, The Greatest Event in Television History, BoJack Horseman, and more.
  19. 19.
    Rob Huebel
    Guest starred on: The Office, Parks and Recreation, Drunk History, The League, Bob's Burgers, The Mindy Project, Happy Endings, Modern Family, Party Down, 30 Rock, Arrested Development, Curb Your Enthusiasm, Transparent, Comedy Bang! Bang!, Last Week Tonight with John Oliver, Wet Hot American Summer: First Day of Camp, Marry Me, The Hotwives of Las Vegas, Marvel's Agents of S.H.I.E.L.D., Kroll Show, Key & Peele, NTSF:SD:SUV, How I Met Your Mother, Up All Night, and more (he's inescapable).
  20. 20.
    Tig Notaro
    Guest starred on: Community, The Office, Bob's Burgers, Inside Amy Schumer, Comedy Bang! Bang!, Garfunkel & Oates, Transparent, and more.