A name that Yanks might see as overly British, but combined with the right surname, it does have a measure of Sherlock Holmesian dash via Nigel Bruce, who played the original Dr. Watson to Basil Rathbone's SherlockHolmes.
Nigel BarnardHawthorne, English actor
Nigel Lythgoe, English TV producer and judge ("So You Think You Can Dance")
Nigel Bradham, American NFL football player
Nigel Barker, English photographer and TV personality
Nigel RichardPattonDempster, British gossip columnist
(William) Nigel Ernle Bruce, English actor
Nigel ErnestJames Mansell, English racing driver
Nigel Bond, English snooker player
Nigel Kennedy, English violinist
Nigel Paul Farage, English MEP and leader of the Independence Party
Nigel Howard Clough, English footballer and manager
Nigel David Short, English chess champion
Nigel McGuinness (born Steven Haworth), English pro wrestler
Nigel Thornberry, the father on The Wild Thornberrys
Dr. Nigel Fenway, from the TV series "Threshold"
Nigel Baker, one of SteveMartin's twelve children in "Cheaper by the Dozen"
Dr. Nigel Townsend, character on the tv show "Crossing "Jordan"
Nigel, antagonist cockatoo in the animated movie "Rio"
Nigel, pelican in Pixar's "Finding Nemo"
Nigel Tufnel, lead guitarist of fictional band Spinal Tap
Nigel Uno (a.k.a. Numbah One), one of the main characters on Codename: Kids Next Door