Neil Patrick Harris, John Lithgow, and Nancy Travis in How I Met Your Mother (2005)

Neil Patrick Harris and John Lithgow in How I Met Your Mother (2005)

Neil Patrick Harris and Katy Perry in How I Met Your Mother (2005)

Neil Patrick Harris, Alyson Hannigan, Jennifer Morrison, Josh Radnor, Cobie Smulders, and Katy Perry in How I Met Your Mother (2005)

Neil Patrick Harris, Alyson Hannigan, Jennifer Morrison, Josh Radnor, and Katy Perry in How I Met Your Mother (2005)

Neil Patrick Harris, Jennifer Morrison, Josh Radnor, Cobie Smulders, and Katy Perry in How I Met Your Mother (2005)

Neil Patrick Harris, Jennifer Morrison, Josh Radnor, and Katy Perry in How I Met Your Mother (2005)

Neil Patrick Harris, Alyson Hannigan, Jason Segel, Danny Strong, Josh Radnor, and Cobie Smulders in How I Met Your Mother (2005)

Neil Patrick Harris, Alyson Hannigan, Jason Segel, Josh Radnor, and Cobie Smulders in How I Met Your Mother (2005)

Alyson Hannigan, Jason Segel, Josh Radnor, and Cobie Smulders in How I Met Your Mother (2005)

Jason Segel in How I Met Your Mother (2005)

Cobie Smulders in How I Met Your Mother (2005)

Alyson Hannigan and Jason Segel in How I Met Your Mother (2005)

Jennifer Lopez and Neil Patrick Harris in How I Met Your Mother (2005)

Alyson Hannigan, Suzie Plakson, and Jason Segel in How I Met Your Mother (2005)

Sarah Chalke and Josh Radnor in How I Met Your Mother (2005)

Neil Patrick Harris and Josh Radnor in How I Met Your Mother (2005)

Neil Patrick Harris in How I Met Your Mother (2005)

Cobie Smulders and Jay Ellis in How I Met Your Mother (2005)

Neil Patrick Harris, Josh Radnor, and Pedro Miguel Arce in How I Met Your Mother (2005)

Neil Patrick Harris, Carla Toutz, Josh Radnor, Pedro Miguel Arce, and Mark Edward Smith in How I Met Your Mother (2005)

Neil Patrick Harris and Cobie Smulders in How I Met Your Mother (2005)

Alyson Hannigan and Alan Fudge in How I Met Your Mother (2005)

John Sloan and Kristen Schaal in How I Met Your Mother (2005)

Josh Radnor and Morgan Peter Brown in How I Met Your Mother (2005)

Neil Patrick Harris and Jason Segel in How I Met Your Mother (2005)

Alyson Hannigan in How I Met Your Mother (2005)

Josh Radnor and Cristin Milioti in How I Met Your Mother (2005)

Neil Patrick Harris, Alyson Hannigan, Jason Segel, Josh Radnor, Cobie Smulders, and Cristin Milioti in How I Met Your Mother (2005)