Bonnie Bedelia is Macaulay Culkin’s (as well as the other little Culkins’) aunt.
Mariska Hargitay of Law & Order: Special Victims Unit (though she will always be Cynthia from ER to me) is Jayne Mansfield’s daughter, and was one of the people in the car when her mother died.
Take a look at Nicolas Cage’s IMDB entry, he has a zillion show business connections: He is also a nephew of Talia Shire (Adrian from the Rocky movies) and is married to Michael Jackson’s ex, Lisa Marie Presley, so he is Elvis’ son in law! He also used to be married to one of the Arquettes.
Mariska Hargitay and I share the same birthday, although different years (not that far off, though).
Anne Murray (obscure Canadian singer) is sister to Gordon Lightfoot (ditto). Mary Martin (the original Peter Pan) is Mother to J.R. (Larry Hagman) of “Dallas” fame. James Arness (Matt Dillon/Gunsmoke) is brother to Peter Graves (Mission Impossible TV series, etc.). David Letterman has a Mom from Indianapolis!
Lightfoot is an Ontario native. A Google search turned up no references to siblings, so I’m speculating that the performer of such classics as “Carefree Highway” and “Sundown” is an only child.
Obscurity is obviously in the eye of the beholder, but both Lightfoot and Murray have been inducted into the Canadian Country Music Hall of Fame and Canadian Association of Broadcasters Hall of Fame. Gordon and Anne were also both fixtures on USA charts in the 1970’s.
Jenny McCarthy is married to John Asher, who is the son of Joyce Bulifant, a regular on “Match Game” (and mother of the sick girl in “Airplane”) and William Asher who was the creator of “Bewitched” and was married (before Bulifant) to Elizabeth Montgomery.
Jenna “Dharma” Elfman’s husband Bodhi is the nephew of musical genius Danny Elfman.
Anne Ramsey’s father-in-law, Lt. Commander Logan Ramsey, was stationed in Hawaii on December 7, 1941. He was one of the first ones to radio in about incoming aircraft. (She was married to his son, actor Logan Ramsey, a character actor specializing in redneckish roles.)
Wally George was mentioned in a recent thread in MPSIMS or IMHO. He is the bio-dad of Rebecca DeMornay.
William Mapother is Tom Cruise’s cousin. William is not that well known, although he did a great job as the evil husband in In The Bedroom. Tom puts him in a lot of his films, so no matter what you think of him, he is good to his cousin.