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Jack Frost (1997 film)
Jack Frost (1997) is a direct-to-video horror comedy directed by Michael Cooney, starring Scott MacDonald as a serial killer transformed into a murderous snowman. Distinct from the 1998 Michael Keaton family film of the same name.
Jack Frost (1998 film)
Jack Frost is a 1998 American comedy-drama directed by Troy Miller, starring Michael Keaton as a musician who returns as a snowman to reconnect with his son.
Jack function
The Jack function, also called the Jack polynomial, is a symmetric polynomial depending on a partition and a parameter, introduced by Henry Jack in 1970.
Jack Garner
Jack Garner (Jack Edward Bumgarner, 1926-2011), American character actor, older brother of James Garner; appeared in Rockford Files, Bret Maverick; also the name of a Rochester film critic.
Jack Gifford
Jack Gifford, also known as John Gifford, was an American semiconductor executive who co-founded Maxim Integrated Products in 1983 and AMD in 1968, leading Maxim until 2006.
Jack Gilbert
Jack A. Gilbert is a microbial ecologist, professor of microbial oceanography at Scripps Institution of Oceanography, and co-founder of the Earth Microbiome Project and American Gut Project.
Jack Gilford
Jack Gilford, born Jacob Aaron Gellman, was an American comic actor of vaudeville, Broadway, film, and television, Oscar-nominated for Save the Tiger and blacklisted in the 1950s.
Jack Gilpin
Jack Gilpin (John Mitchell Gilpin, born 1951, Boyce, Virginia) is an American actor and Episcopal priest, the butler Mr. Church in HBO's The Gilded Age, father of Betty Gilpin, and grandson of Billy Mitchell.
Jack Gleeson
Jack Gleeson (born 1992, Cork, Ireland) is an Irish actor famous as Joffrey Baratheon in Game of Thrones (2011–2014). He stepped back from screen acting in 2014, co-founded Collapsing Horse Theatre, and returned via In the Land of Saints and Sinners, The Sandman, and House of Guinness.
Jack Goody
Jack Goody, born John Rankine Goody, was a British social anthropologist who held Cambridge's William Wyse chair and studied how writing and property transmission shape societies.
Jack Gorski
Jack Gorski (1931–2006) was an American molecular endocrinologist at the University of Wisconsin–Madison whose mid-1960s work produced the first molecular characterization of a steroid hormone receptor, the estrogen receptor.
Jack Grealish
Jack Grealish, English winger born 1995 in Birmingham; Aston Villa captain, then £100m British-record move to Manchester City in 2021; 39 England caps; loans to Everton from 2025.
Jack Greenblatt
Jack Greenblatt, or Jack F. Greenblatt, is a Canadian molecular biologist and University Professor at the University of Toronto known for the first genome-wide protein interaction network.
Jack Griffo
Jack Davis Griffo (born 1996, Orlando, Florida) is an American actor, musician, and producer known as Max Thunderman on Nickelodeon's The Thundermans, its 2024 revival film, and the Undercover spin-off, plus Alexa & Katie and Super Sons voice work.
Jack Gunthard
Jack Günthard (Jakob Günthard, 1920-2016), Swiss artistic gymnast, 1952 Helsinki horizontal bar Olympic champion and team silver medalist; later Italian and Swiss national coach and 'Fit mit Jack' fitness TV pioneer.
Jack H. Freed
Jack H. Freed (J. H. Freed) is an American physical chemist and biophysicist at Cornell University, on its faculty since 1963, known for building electron spin resonance into a quantitative tool for studying membranes and proteins.
Jack H. Medalie
Jack H. Medalie (1922–2006) was a South African-born physician and epidemiologist who founded family medicine at Case Western Reserve University and directed the Israeli Ischemic Heart Disease Study from 1963.
Jack H. Mendelson
Jack H. Mendelson (Jack Harold Mendelson, 1929–2007) was an American psychiatrist and endocrinologist who led the Alcohol and Drug Abuse Research Center at McLean Hospital and helped establish alcoholism as a medical disorder.
Jack H. Oppenheimer
Jack H. Oppenheimer (1927–2006) was a German-born American endocrinologist who defined how thyroid hormone acts in cells, set the levothyroxine replacement dose for hypothyroidism, and led the American Thyroid Association in 1986.
Jack H. Wernick
Jack H. Wernick (Jack Harry Wernick, 1923–2006) was an American materials scientist who led device-materials research at Bell Laboratories and joined the National Academy of Engineering in 1979.
Jack H. Westbrook
Jack H. Westbrook, born Jack Hall Westbrook in 1924, is an American metallurgist at General Electric known for early work on intermetallic compounds and for computerized materials property databases.
Jack Haley
Jack Haley (John Joseph Haley Jr.) was an American vaudeville, stage, radio, and film actor best known as the Tin Man in The Wizard of Oz (1939).
Jack Halpern (inorganic chemist)
Jack Halpern (1925–2018) was a Polish-born inorganic chemist at the University of Chicago, a founder of mechanistic organometallic chemistry and homogeneous catalysis whose group made the first homogeneous transition-metal hydrogenation catalyst in 1961.
Jack Handey
Jack Handey (born 1949), American humorist, creator of Deep Thoughts by Jack Handey on Saturday Night Live, Unfrozen Caveman Lawyer, and Toonces; New Yorker writer since 1987 and novelist (The Stench of Honolulu).
Jack Hanna
Jack Hanna (born 1947, Knoxville, Tennessee) is an American zookeeper and TV personality, director of the Columbus Zoo 1978–1992 and Director Emeritus, known for Letterman appearances and shows Animal Adventures, Into the Wild, and Wild Countdown.
Jack Harbaugh
Jack Harbaugh, born in Crestline, Ohio, is a retired college football coach; head coach at Western Michigan (1982-86) and Western Kentucky (1989-2002), winning the 2002 I-AA national title; father of coaches John and Jim Harbaugh.
Jack Hargreaves
Jack Hargreaves OBE (1911-1994), English television presenter and Southern Television executive, creator and host of Out of Town (1960-1981, later Old Country on Channel 4) and the children's series How?
Jack Harkness
Captain Jack Harkness, played by John Barrowman, is a fictional Time Agent from Doctor Who (2005) and the spin-off Torchwood; an immortal, pansexual companion created by Russell T Davies, first appearing in "The Empty Child".
Jack Harlan
Jack Rodney Harlan (1917–1998) was an American botanist and agronomist who studied cultivated plants' evolution, taught at the University of Illinois, and joined the National Academy of Sciences in 1972.
Jack Harlow
Jack Harlow (Jackman Thomas Harlow, born 1998) is an American rapper from Louisville, Kentucky, signed to Generation Now/Atlantic. Known for 'Whats Poppin,' three Hot 100 No. 1s ('Industry Baby,' 'First Class,' 'Lovin On Me'), and albums through Monica (2026).