Question: Who was the director of 2004 American teen comedy adventure film in which Michelle Christine Trachtenberg appeared?

Context:
EuroTrip
EuroTrip is a 2004 American teen comedy adventure film written by Alec Berg, David Mandel, and Jeff Schaffer, and directed by Schaffer.
 The film stars Scott Mechlowicz, Jacob Pitts, Michelle Trachtenberg, Travis Wester, and Jessica Boehrs.
 Mechlowicz portrays Scott "Scotty" Thomas, an American teenager who travels across Europe in search of his German pen pal, Mieke (Boehrs).
 Accompanied by his friend Cooper (Pitts) and siblings Jenny and Jamie (Trachtenberg and Wester), Scott's quest takes him to London, Paris, Amsterdam, Bratislava, Berlin, and Rome, encountering awkward and embarrassing situations along the way.
 The film received a 2004 Teen Choice Award nomination for "Choice Movie Your Parents Didn't Want You to See".
Guidance (2015 series)
Guidance is an American teen drama web series.
 The series is produced by AwesomenessTV, and premiered on July 19, 2016 on go90.
 The first season premiered on October 18, 2015 and followed Miriam Worth (Amanda Steele) attending sessions with her guidance councilor Anna (Michelle Trachtenberg) following scandalous photos circulating around the school.
 The series was renewed for a second season which premiered on November 14, 2016.
 Season 2 featured an entire new cast.
 The second season follows Hilary (Arden Rose), an over achiever at Capital High who discovers that her perfect GPA is suffering, causing her to accuse the school’s most beloved teacher of favoritism.
 The new guidance counselor (Erica Dasher) launches an investigation.
 The series was renewed for a third season which premiered on August 28, 2017.
 Season 3, once again features a new cast.
 The third season follows Faith (Dianne Doan), who is in mourning after the death for twin sister, Grace (also played by Doan) due to a fatal hit-and-run.
 Meanwhile Katina Howard (Monique Coleman), the school's guidance counselor facilitates a school-wide mourning while investigating the tarnishment of Grace's memory.
Mean Girls
Mean Girls is a 2004 American teen comedy film directed by Mark Waters and written by Tina Fey.
 The movie is based in part on Rosalind Wiseman's non-fiction self-help book "Queen Bees and Wannabes", which describes female high school social cliques and the damaging effects they can have on girls.
A Cinderella Story: If the Shoe Fits
A Cinderella Story: If the Shoe Fits is a 2016 American teen comedy musical film directed by Michelle Johnston and starring Sofia Carson, Thomas Law and Jennifer Tilly.
 It is a sequel to "" (2011) and the fourth film in "A Cinderella Story" series.
 The film was released digitally on August 2, 2016, and on DVD on August 16, 2016.
 It premiered on Freeform on November 27, 2016 and on Disney Channel on January 16, 2017.
Michelle Trachtenberg
Michelle Christine Trachtenberg (born October 11, 1985) is an American actress.
 She is known for portraying Nona F. Mecklenberg in "The Adventures of Pete & Pete" (1994–96), Dawn Summers in "Buffy the Vampire Slayer" (2000–03), Celeste in "Six Feet Under" (2004), and Georgina Sparks in "Gossip Girl" (2008–12).
 She has also appeared in films such as "Harriet the Spy" (1996), "Inspector Gadget" (1999), "EuroTrip" (2004), "Ice Princess" (2005), "Black Christmas" (2006), "17 Again" (2009), "Cop Out" (2010), "Weeds" (2011), and "Killing Kennedy" (2013).
Springtime with Roo
Springtime with Roo is a 2004 American direct-to-video animated musical comedy adventure film produced by Walt Disney Pictures and DisneyToon Studios, animated by Toon City Animation, Inc., the film are featuring characters from Disney's "Winnie the Pooh" franchise.
 Unlike "A Very Merry Pooh Year" and "Seasons of Giving", "Springtime with Roo" does not reuse episodes from "The New Adventures of Winnie the Pooh".
Scooby-Doo 2: Monsters Unleashed
Scooby-Doo 2: Monsters Unleashed is a 2004 American family comedy adventure film, based on the animated television series, "Scooby-Doo, Where Are You?
".
 It is the second installment in the "Scooby-Doo" live-action film series and a sequel to 2002's "Scooby-Doo", and was directed by Raja Gosnell, written by James Gunn and released by Warner Bros.
 Pictures.
New York Minute (film)
New York Minute is a 2004 American teen comedy film starring Mary-Kate Olsen, Ashley Olsen and Eugene Levy.
 It was directed by Dennie Gordon and released on May 7, 2004.
 In the film Mary-Kate and Ashley play twins with opposing personalities who have a series of misadventures around New York City.
 "New York Minute" reunited Mary-Kate and Ashley with their "Full House" co-star, Bob Saget.
 It was the Olsen twins' first theatrical film release since 1995's "It Takes Two".
 It was also the last film featured by Olsen twins, and the last film released by Dualstar Entertainment before it went into dormancy.
Confessions of a Teenage Drama Queen (soundtrack)
Confessions of a Teenage Drama Queen is the soundtrack album for the 2004 American teen comedy film: "Confessions of a Teenage Drama Queen", released on February 17, 2004.
 The film's lead actress Lindsay Lohan recorded four songs written for the film, including "Drama Queen (That Girl)", that was released as a promotional single in January of that year.
The Clique (film)
The Clique is a 2008 American teen comedy film directed by Michael Lembeck, based on the popular teen series "The Clique" by author Lisi Harrison.
 The film was produced through Alloy Entertainment and released through Tyra Banks' company Bankable Productions.

Answer: Schaffer