Leonard George ("Toby") Colbeck (1 January 1884 – 3 January 1918) was an English first-class cricketer active 1905–14 who played for Middlesex.
 He was born in South Harrow.
 He died off the Cape of Good Hope in "HMS Ormonde" during World War I, in which he had been awarded the Military Cross.
Leonard George "Len" Butt (26 August 1910 in Wilmslow – June 1994) was a professional footballer, who played for Stockport County, Macclesfield Town, Huddersfield Town, Blackburn Rovers, York City and Mansfield Town.
Leonard George "Len" Goodson (1880–1927) was an English-born footballer who played as an inside left and left wing around the turn of the 19th century.
 He was the scorer of the first two goals for Doncaster Rovers in the Football League.
Peter Graves (born Peter Duesler Aurness; March 18, 1926 – March 14, 2010) was an American film and television actor.
 He was best known for his role as Jim Phelps in the CBS television series "" from 1967 to 1973 (original) and from 1988 to 1990 (revival).
 His elder brother was actor James Arness (1923–2011).
 Graves was also known for his portrayal of airplane pilot Captain Clarence Oveur in the 1980 comedy film "Airplane!
" and its 1982 sequel "".
Leonard George (born 1957) is a Canadian psychologist and schizophrenia researcher based in Vancouver, British Columbia, best known for his writing and lectures on varieties of anomalous phenomenon, spirituality, psychology and history.
 In the 1990s he was a noted broadcaster in Canada, appearing on radio and television in that country and in the United States where he appeared on national programs such as a highly rated NBC special hosted by actor Peter Graves in October 1994.
Leonard George (Len) Siffleet (14 January 1916 – 24 October 1943) was an Australian commando of World War II.
 Born in Gunnedah, New South Wales, he joined the Second Australian Imperial Force in 1941, and by 1943 had reached the rank of sergeant.
 Posted to M Special Unit of the Services Reconnaissance Department, Siffleet was on a mission in Papua New Guinea when he and two Ambonese companions were captured by partisan tribesmen and handed over to the Japanese.
 All three men were interrogated, tortured and later beheaded.
 A photograph of Siffleet's impending execution became an enduring image of the war, and his identity was often confused with that of other servicemen who suffered a similar fate, in particular Flight Lieutenant Bill Newton, VC.
Special Treat, also known as NBC Special Treat, is an occasional series of specials on NBC that were geared toward teenagers, similar to ABC's "Afterschool Special".
 It debuted in 1975 and ran through the 1985–86 season.
 It would be replaced in the fall of 1986 with "Main Street", a discussion program for teens hosted by Bryant Gumbel.
Leonard George 'Jack' Giles (17 June 1921 – 23 August 1994) was an Australian rules footballer who played with Sturt in the South Australian National Football League (SANFL), and cricketer, who represented South Australia.
 He was appointed captain of Sturt in 1949.
Leonard George Butt (20 December 1893 – 1993) was an English footballer who played as a half-back in the 1920s, spending the majority of his career with Bournemouth & Boscombe Athletic.
Leonard George "Len" Gale (18 April 1897 – 25 June 1948) was an Australian rules footballer who played with Fitzroy in the Victorian Football League (VFL).

Question: What was the nationality of the host of the NBC special Leonard George appeared in in 1994?
Answer: American