Title: Head On (1980 film)
Content: Sally Kellerman as Michelle Keys ; Stephen Lack as Peter Hill ; Lawrence Dane as Frank Keys ; J.P. Linton as Gad Bernstein (as John-Peter Linton) ; John Huston as Clarke Hill ; Patrick Crean as Fencing Master ; Marty Galin as Male Student ; Joann McIntyre as Female Student ; Sheila Currie as Young Nurse ; Sandra Scott as Head Nurse ; Hadley Kay as Michelle's Patient (Stanley) 
Title: Head On (1980 film)
Content:  Head On is a 1980 Canadian drama film directed by Michael Grant. It was entered into the 31st Berlin International Film Festival. It was released on VHS home video by Vestron Video in 1985 in the USA and has not yet been released on DVD. It is also known in the USA as Fatal Attraction (not to be confused with the 1987 film of the same name).
Title: Head On (1998 film)
Content:  Head On is a 1998 Australian LGBT-related romantic drama film directed by Ana Kokkinos, who wrote the screenplay with Andrew Bovell and Mira Robertson. The film is based on the 1995 novel Loaded was written by Christos Tsiolkas. The film stars Alex Dimitriades, Paul Capsis, Julian Garner and Tony Nikolakopoulos. The film tells the story of Ari, a 19-year-old homosexual Greek-Australian living in St. Kilda, Melbourne. The film gained notoriety upon its release for its sexual explicitness, including a graphic masturbation scene performed by Dimitriades and numerous sex scenes. The film received mixed reviews from critics, with positive reviewers praising its stark realism, the lead performance by Dimitriades and the uncompromising subject matter.
Title: Head-On (film)
Content: Birol Ünel as Cahit Tomruk ; Sibel Kekilli as Sibel Güner ; as Maren ; Güven Kiraç as Seref ; Meltem Cumbul as Selma ; Hermann Lause: Psychotherapist Dr. Schiller ; Demir Gökgöl: Yunus Güner ; Cem Akın: Yilmaz Güner ; Mona Mur: Customer Zoe Bar ; Adam Bousdoukos: Barman 1 ; Mehmet Kurtuluş: Barman 2 ; Tim Seyfi: Taxidriver ; Fanfare Ciocărlia: Musicians ; Stefan Gebelhoff as Nico ; Francesco Fiannaca as Mann am Tresen 
Title: Head On (1998 film)
Content: Alex Dimitriades as Ari ; Paul Capsis as Johnny/Tula ; Julian Garner as Sean ; Tony Nikolakopoulos as Dimitri ; Elena Mandalis as Betty ; Damien Fotiou as Joe ; Eugenia Fragos as Sophia ; María Mercedes as Tasia ; Alex Papps as Peter ; Dora Kaskanis as Dina ; Vassili Zappa as Vassili ; Andrea Mandalis as Alex 
Title: Head-On (film)
Content:  Head-On (Gegen die Wand, literally Against the Wall; Duvara Karşı) is a 2004 German-Turkish drama film written and directed by Fatih Akın. It stars Birol Ünel as a Turkish-born, alcoholic German widower who enters into a marriage of convenience with a young woman of Turkish descent. She is desperate to escape her restrictive and abusive male relatives. The film won the Golden Bear at the 54th Berlin International Film Festival.
Title: From the Head
Content:  From the Head is a 2011 American drama film written and directed by George Griffith. The film stars Griffith, Matthew Lillard, Jeffrey Doornbos and Samantha Lemole in the lead roles.
Title: Ana Kokkinos
Content:  In her feature-length work, Head On (1998), Kokkinos explores the relationship between the city and the individual. Similar to a "road movie" (i.e. Mad Max, 1979) where the narrative follows the protagonists journey to their destination, a "street movie" follows the protagonist as they wander urban streets. Head On follows Greek-Australian teenager Ari as he wanders the streets of Melbourne. Ari is struggling with his identity as a gay male and the identity his family wishes to thrust upon him. Head On divided the Greek community in Australia Kokkinos said in an interview with the LA Times. Kokkinos said "what it did is that it opened up a dialogue between younger Greeks and their parents. What the film has done is that it has broken down barriers." The film was adapted from the novel Loaded which was written by Christos Tsiolkas. Head On received numerous awards from around the globe including Best First Feature in the San Francisco International Lesbian and Gay Film Festival as well as Best Film at the Milan International Lesbian and Gay Film Festival.
Title: Head On (1980 film)
Content:  Michelle Keys and Peter Hill are two strangers in Toronto who meet by accident in a head-on traffic accident. Both of them receive only minor injuries but they bring legal action against each other. Soon their business relationship leads to romance as their mutual attraction to one another transforms into a bizarre game of sexual upmanship with each encounter becoming more perverse. In their background stories, Michelle is a psychoanalyst who is married to an unattentive businessman, named Frank Keys, who is always traveling out of town on business trips. Peter is single and works an art professor at a local college while he keeps in close touch with his artist father, Clarke, which Peter attends art gallery 
Title: Head (film)
Content:  Head is a 1968 American satirical musical adventure film written and produced by Jack Nicholson and Bob Rafelson, directed by Rafelson, starring television rock group the Monkees (Davy Jones, Peter Tork, Micky Dolenz and Michael Nesmith) and distributed by Columbia Pictures. During production, one of the working titles for the film was Changes, which was later the name of an album by the Monkees. Another working title was Untitled. A rough cut of the film was previewed for audiences in Los Angeles in the summer of 1968 under the title Movee Untitled. The film featured Victor Mature as "The Big Victor" and cameo appearances by Nicholson, Teri Garr, Carol Doda, Annette Funicello, Frank Zappa, Sonny Liston, Timothy Carey, Percy Helton and Ray Nitschke. Also appearing on screen in brief non-speaking parts are Dennis Hopper and film choreographer Toni Basil.

Question: Who was the screenwriter for Head On?
Answer: Christos Tsiolkas.