A hand (med./lat.: manus, pl. manūs) is a prehensile, multi-fingered extremity located at the end of an arm or forelimb of primates such as humans, chimpanzees, monkeys, and lemurs. A few other vertebrates such as the koala (which has two opposable thumbs on each "hand" and fingerprints remarkably similar to human fingerprints) are often described as having either "hands" or "paws" on their front limbs.

Hands are the main structures for physically manipulating the environment, used for both gross motor skills (such as grasping a large object) and fine motor skills (such as picking up a small pebble). The fingertips contain some of the densest areas of nerve endings on the body, are the richest source of tactile feedback, and have the greatest positioning capability of the body; thus the sense of touch is intimately associated with hands. Like other paired organs (eyes, feet, legs), each hand is dominantly controlled by the opposing brain hemisphere, so that handedness, or the preferred hand choice for single-handed activities such as writing with a pen, reflects individual brain functioning.

Jonathan "Jon" Lajoie (born August 21, 1980) is a Canadian comedian, actor, rapper, singer, musician and Internet celebrity from Montreal, Quebec.

Lajoie was born in Saint-Hubert, Quebec, Canada and raised in Montreal, Quebec. His father is French-Canadian and his mother is English-Canadian. He graduated from Dawson College's theatre program in 2001. Since 2003, he has acted as an English-Canadian musician named Thomas Edison in Radio-Canada's French-Canadian sitcom L'auberge du chien noir.

Jon Lajoie began his career as a comedian in 2007. Lajoie's performance included music, skits, and some stand-up comedy. Jon Lajoie has also released 2 studio albums.

Lajoie currently has a role in the FX Network TV show called The League as Taco MacArthur, a perpetually stoned and unemployed musician. Lajoie performs his song "The Birthday Song" and "Vaginal Hubris" in two episodes of the first season. Throughout the series, Lajoie performs songs written specifically for the show.

Jon Lajoie filmed an episode of Comedy Central Presents on November 7, 2009. It premiered on March 5, 2010. The same special aired uncensored as part of Comedy Central's Secret Stash on June 6 at 1:30 AM (EST). The special featured the world premiere of the video for his song "Pop Song".

Macy Gray (born Natalie McIntyre, 6 September 1967 in Canton, Ohio, USA) is a Grammy Award-winning American R&B and soul singer-songwriter, record producer, and actress, famed for her distinctive raspy voice, and a singing style heavily influenced by Billie Holiday and Betty Davis.

Gray has released six studio albums, and has received five Grammy Award nominations, winning one. She has appeared in a number of films including Training Day, Spider-Man, Scary Movie 3, Lackawanna Blues, Idlewild and For Colored Girls. Gray is best known for her international hit single "I Try," taken from her multi-platinum debut album On How Life Is.

Macy Gray, was born to Laura McIntyre, a math teacher, and Otis Jones; Laura later remarried Richard McIntyre, who adopted Macy and fathered her brother Nathon and sister Nehlia.^{[citation needed]} Gray was born in Canton, Ohio, where she briefly worked at age 12, before being fired for lateness. She decided to pursue a career in music after being expelled from Western Reserve Academy in Hudson, which she had attended from the age of 14. However, Gray's initial success came as a surprise. While attending the University of Southern California (graduated 1990) she agreed to write songs for a friend, and a demo session was scheduled for the songs to be recorded by another singer. When the vocalist failed to turn up, Gray recorded them herself. She then met writer/producer Joe Solo while working as a cashier in Beverly Hills. Together, they wrote a large collection of songs and recorded them in Solo's studio. The demo tape landed Gray the opportunity to sing at jazz cafés in Los Angeles, California. Despite Gray's dislike of her own voice,Atlantic Records signed her. She began recording her debut record but was dropped from the label upon the departure of her A&R man Tom Carolan, who signed her to the label. In 1998, she landed a record deal with Epic Records. She was on one of the songs from The Black Eyed Peas' debut album, "Love Won't Wait".

Benjamin Solomon "Ben" Carson, Sr., (born September 18, 1951) is an American neurosurgeon and the Director of Pediatric Neurosurgery at Johns Hopkins Hospital. He was awarded the Presidential Medal of Freedom, the highest civilian award in the United States, by President George W. Bush in 2008.

Carson was born in Detroit, Michigan and was raised by his single mother, Sonya Carson. He struggled academically throughout elementary school, but started to excel in middle school and throughout high school. After graduating with honors from his high school, he attended Yale University, where he earned a degree in Psychology. He chose to go to Yale because in College Bowl, an old TV program, he saw Yale compete against and defeat many other colleges in knowledge, including Harvard. Carson wanted to participate in College Bowl, but the program was discontinued. From Yale, he attended University of Michigan Medical School.

Carson's eye-hand coordination and three-dimensional reasoning skills made him a gifted surgeon. After medical school he became a neurosurgery resident at Johns Hopkins Hospital in Baltimore. Starting off as an adult neurosurgeon Carson became more interested in pediatrics. With children he believed that "what you see is what you get, ... when they’re in pain they clearly show it with a frown on their face or when they are happy they show it by smiling brightly." Since then he has been the head of the pediatric neurosurgeon department.