Biography
John T. Kretchmer is an American film and television director. Throughout his career he has amassed a number of television credits namely Buffy the Vampire Slayer, Angel, Charmed, The Twilight Zone, Hercules: The Legendary Journeys, Special Unit 2 (also a producer), Dark Angel, Psych, Burn Notice, Veronica Mars, Star Trek: Deep Space Nine, Star Trek: Voyager, Moonlight and other series. Prior to a career in television, Kretchmer worked as a assistant director on number of films such as The In-Laws (1979), Baby Boom (1987), The Naked Gun: From the Files of Police Squad! (1988). Description above from the Wikipedia article John T. Kretchmer, licensed under CC-BY-SA, full list of contributors on Wikipedia.
Filmography46 titles

Riverdale

Criminal Minds

White Collar

Charmed

Buffy the Vampire Slayer

Jurassic Park

Psych

Star Trek: Deep Space Nine

iZombie

Forever

Veronica Mars

One Tree Hill

Star Trek: Voyager

Nancy Drew

The Middleman

The Winchesters

Xena: Warrior Princess

Sliders

13 Reasons Why

Army Wives

Burn Notice

Dark Angel

She Spies

Moonlight

The Naked Gun: From the Files of Police Squad!

The Good Guys

Frequency

In Plain Sight

seaQuest DSV

Kyle XY

Hercules: The Legendary Journeys

Lois & Clark: The New Adventures of Superman

Necessary Roughness

The Naked Gun 2½: The Smell of Fear

Greek

The In-Laws

Nash Bridges

Silver Bullet

Flatliners

Baby Boom

October Road

Birds of Prey

Welcome Home, Roxy Carmichael

Delirious

Hidden Palms

Dunston Checks In