Question: Joe Cornish made his directorial debut in the comedy film that starred whom?
Context: Attack the Block is a 2011 British science fiction horror comedy film written and directed by Joe Cornish and starring John Boyega, Nick Frost, Jodie Whittaker and Luke Treadaway.  It was the film debut of Cornish, Boyega and future Academy Award-winning composer Steven Price. Adam and Joe Go Tokyo was a series of eight episodes created for BBC Three (also airing in full on BBC One at a later timeslot as promotion for the new channel).  It starred Adam Buxton and Joe Cornish of "The Adam and Joe Show" and aired from 30 May 2003 to 25 July 2003.  The aim of the show was to offer an alternative insight into the lives of Tokyo's citizens, with the obligatory look at a number of gadgets and toys along the way.  The show took the format of a mature Blue Peter outlining many pastimes of the average (or less so) Japanese person, everything from competitive speed eating to manga cosplay.  Each episode would end with a Japanese band joining the show to perform. Joseph Murray Cornish (born 20 December 1968) is an English comedian, television and radio presenter, film director, writer and actor, who together with his long-time comedy partner, Adam Buxton, forms the comedy duo Adam and Joe.  In 2011, Cornish released his directorial debut "Attack the Block".  He has also co-written "", with Steven Moffat and Edgar Wright, and "Ant-Man", with Wright, Adam McKay and Paul Rudd. Nicholas John Frost (born 28 March 1972) is an English actor, comedian, screenwriter, producer and author.  He is best known for his work in the "Three Flavours Cornetto trilogy" of films, consisting of "Shaun of the Dead" (2004), "Hot Fuzz" (2007), and "The World's End" (2013), and the television comedy "Spaced" (1999–2001).  He also appeared in Joe Cornish's film "Attack the Block" (2011).  He co-starred in the 2011 film "Paul", which he co-wrote with frequent collaborator and friend Simon Pegg.  He is also well known for his various roles in the sketch show "Man Stroke Woman". Nigel Edward Buxton (29 May 1924 – 30 November 2015) was a British travel writer and wine critic, also known for appearing as BaaadDad in the Channel 4 comedy series "The Adam and Joe Show", which was written and presented by his son Adam Buxton along with Adam's friend Joe Cornish.  The comedy behind the character of BaaadDad was the juxtaposition of the fact that he was clearly an elderly and upper middle class man with the topics that he discusses, which relate to youth culture - clubbing, drug use, and so on.  In this character, he featured in the video for Frank Black's single Dog Gone. The Adventures of Tintin, known as The Adventures of Tintin: The Secret of the Unicorn outside North America, is a 2011 3D motion capture computer-animated mystery adventure comedy film based on "The Adventures of Tintin", the comics series by Belgian cartoonist Hergé.  Directed by Steven Spielberg, produced by Peter Jackson, and written by Steven Moffat, Edgar Wright and Joe Cornish, the film is based on three of Hergé's albums: "The Crab with the Golden Claws" (1941), "The Secret of the Unicorn" (1943), and "Red Rackham's Treasure" (1944).  The cast includes Jamie Bell, Andy Serkis, Daniel Craig, Nick Frost and Simon Pegg. Adam Buxton and Joe Cornish are British comedy performers known together as Adam and Joe.  They are best known for presenting "Adam and Joe" on BBC Radio 6 Music (2007-2009, 2011) and "The Adam and Joe Show" on Channel 4 (1996-2001). Adam Offord Buxton (born 7 June 1969) is an English comedian, writer and actor.  He forms one half of the duo Adam and Joe, with filmmaker Joe Cornish.  The pair presented "Adam and Joe" on BBC Radio 6 Music, whilst Buxton also presented his own show on 6 Music on Sundays, called "Adam Buxton's Big Mix Tape".  In 2012–2013 Buxton presented another radio show for BBC 6 Music, co-hosting with Edith Bowman.  When not presenting on radio and television or recording podcasts, Buxton hosts "Bug", a humorous exploration of music videos through YouTube comments, which also had a televised version in 2012.  He has also guested on various comedy panel shows such as "Never Mind the Buzzcocks" and "8 Out of 10 Cats Does Countdown". Leeon Henry Jones (born 12 May 1993) is a British actor.  His debut was in Joe Cornish's creature feature "Attack the Block". The Adam and Joe Show is a British television comedy show, written and presented by Adam and Joe (Adam Buxton and Joe Cornish), which ran for four series on Channel 4 between 1996 and 2001.  All four series are available free to watch on All 4, but currently only a compilation of the best of the entire run is available on DVD, however all episodes are available on iTunes.
Answer: John Boyega, Nick Frost, Jodie Whittaker and Luke Treadaway