(written from a Production point of view)
John Yohan Cho (born 16 June 1972; age 43) is a Korean-American actor who portrays Hikaru Sulu in Star Trek and Star Trek Into Darkness, both directed by J.J. Abrams. Cho is best known for his roles as John in the American Pie films (where he popularized the term "MILF") and as Harold in the 2004 comedy Harold & Kumar Go to White Castle. He reprised the latter role for the 2008 sequel, Harold and Kumar Escape From Guantanamo Bay.
Born in Seoul, South Korea, in 1972, Cho and his family immigrated to the United States in 1978. Cho graduated from the University of California, Berkeley with a Bachelor of Arts degree in English and began appearing on television and in film in 1997.
Cho was selected as People Magazine's 11th sexiest man alive in 2006. In addition to acting, Cho is the lead singer of the Los Angeles-based rock band Viva La Union. In April 2008 Cho announced that he and his wife, Kerri Higuchi, are expecting their first child together and that it is a boy. 
In addition to the Harold & Kumar films (in the second, Clyde Kusatsu played Harold's father) and American Pie, Cho also had supporting roles in such films as the 2001 comedy Down to Earth, the acclaimed 2002 drama Better Luck Tomorrow, and 2004's In Good Company. He also co-starred with Anton Yelchin in the 2001 comedy Delivering Milo; he and Yelchin worked together again in Star Trek, with Yelchin portraying Pavel Chekov. Cho also had smaller roles in films like Wag the Dog, Bowfinger, American Beauty (also featuring Scott Bakula), Evolution, Solaris, Nick and Norah's Infinite Playlist, and Saint John of Las Vegas (2009), in which he stars with Sarah Silverman.
Following his work on Star Trek, Cho appeared in the science fiction film Caller ID (2010, with Ken Feinberg), the comedy A Very Harold & Kumar 3D Christmas (2011, with Richard Riehle), and the science fiction remake Total Recall (2012).
American Pie franchise
Cho made a mark in the successful high school-college comedy film series as the student who popularized the term MILF. Cho worked with Lawrence Pressman in the first and third films. Aside from Pressman, Cho worked with fellow Asian Trek actor Clyde Kusatsu in the first film(1999), American Pie 2(2001) with Larry Drake then American Wedding(2003) Cho and Pressman teamed with Loren Lester and Angela Paton. In 2012, Cho without Pressman returned for American Reunion with Jay Harrington.
One of Cho's earliest projects was The Tiger Woods Story, a 1998 TV movie directed by LeVar Burton which also served as Burton's film directorial debut. That same year, Cho worked with J.J. Abrams for the first time on an episode of Felicity. He also guest-starred in a 1998 episode of Charmed directed by the late Richard Compton. Cho's other early television credits include guest spots on The Jeff Foxworthy Show (with Scarlett Pomers and Ann Cusack), V.I.P. (with Alexander Enberg), and The Magnificent Seven (with Brad Dourif, Andrew Kavovit, Tzi Ma, and Ron Perlman.
Cho had a voice-over role as Hirotaka on an episode of the Disney animated series Kim Possible; George Takei appeared in the same episode as "Sensei," the first of several appearances on the series.
Cho starred as Chau Presly on the WB comedy series Off Centre, which aired from 2001 through 2002. He also had a recurring role on Kitchen Confidential, which ran for only four episodes on Fox in 2005 and also featured Frank Langella. In 2005, Cho guest-starred on the Fox medical drama House, on which his Star Trek co-star Jennifer Morrison is a regular and his Harold & Kumar costar Kal Penn claimed to be a Dahar Master of the Klingon Empire. In the episode, entitled "Love Hurts", Cho played a sadomasochist patient whose lifestyle alienates his parents, played by Elizabeth Sang and DS9/ENT guest actor Keone Young. Matt Malloy also guest-starred in the episode.
Cho's other television appearances include episodes of The Division (2003, with Irene Tsu), Grey's Anatomy (2006, with Jeffrey Dean Morgan), and How I Met Your Mother (2007, with Jim Jansen). He even lent his voice to three episodes of Seth MacFarlane's American Dad! (2006 and 2011), which also features the voices of Scott Grimes and Wendy Schaal. In 2007, he joined the cast of the hit series Ugly Betty in a recurring role as Kenny, the best friend of Star Trek: Hidden Evil voice actor Christopher Gorham's character. Tony Plana and Vanessa Williams are among the other performers who star in this series.
Cho then starred as Agent Demetri Noh on ABC's science fiction series Flash Forward, created by David Goyer and veteran Star Trek writer/producer Brannon Braga.  The series was cancelled after one season in 2010. More recent television guest roles include episodes of Childrens Hospital (2010, with Kurtwood Smith), 30 Rock (2011), and NTSF:SD:SUV:: (2011, with Kate Mulgrew).
|Alternate reality films regular cast|
|John Cho • Simon Pegg • Chris Pine • Zachary Quinto • Zoë Saldana • Karl Urban • Anton Yelchin|