Joseph Chmelar, a divorced father of two, was in for a big surprise when his young sons informed him that his ex -- whom he had only recently separated from -- had a child with another man. But shortly after, he had an even ruder awakening when he received a letter stating that he owed $8,500 in back child support for the kid -- on Father's Day weekend, no less.

"I thought, 'My God, this is hilarious.' It's Father's Day weekend and here's the biggest joke that I think I've ever had played on me transpiring right now," he told Michigan's Wood TV last week.

Chmelar asked Wood TV's investigative unit, Target 8, to look into his case; after all, how could he be legally obligated to pay child support for a kid that isn't his?

It turns out that it's legal, thanks to a Michigan law drafted in 1956 called the Paternity Act that was recently called "outrageous" by a lawmaker. Watch the video above for more on the law and to find out how Chmelar's case was resolved.

This isn't the only child support case to make headlines this month. Tennessee man Orlando Shaw, who fathered 22 children with 14 different mothers, recently told Nashville's News Channel 5 that he may be starring in an upcoming reality show, and it was reported that NBA star Steve Nash may be required to pay more child support as well.

Click through the slideshow below to see some of our favorite celebrity single dads.

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  • Lenny Kravitz

    Rocker Lenny Kravitz has clearly made an impression on daughter Zoe: the 23-year-old dabbles in <a href="" target="_hplink">acting, modeling</a> and -- just like dad! -- <a href="" target="_hplink">rocking out</a>. For his part, Kravitz is a supportive parent, plugging her work whenever he gets the chance. (Zoe's music is <a href="" target="_hplink">"the bomb,"</a> according to her proud papa.) In September 2007, Kravitz <a href="" target="_hplink">opened up to the <em>Washington Post </em></a> about life with Zoe, saying, "Watching my daughter grow up is the highlight of everything."

  • Ricky Martin

    Single dad Ricky Martin is raising his twin boys all on his own. "I'm doing this on my own because I don't want to miss a moment," <a href=",,20245143,00.html" target="_hplink">Martin told <em>People</em> in December 2008</a>. "I'm the one who changes the diapers, the one that feeds them, the one that bathes them, the one that puts them to sleep." As for his fatherhood philosophy? "I want to give them information and raise them with honesty and love, and give them self-esteem and a lot of acceptance." What a dedicated dad!

  • Usher

    After a drawn-out custody battle with ex-wife, Tameka Foster, Usher was <a href="" target="_hplink">awarded primary custody</a> of the ex-couple's two sons, Usher Raymond V and Naviyd, in August 2012. In a 2010 interview with <em>W</em> magazine, Usher said <a href="" target="_hplink">he thinks of parenting as a gift</a> that's made him more conscious of everything around him. "When you put the passion between a man and a woman up against having children, it doesn't hold a candle," he added. "I've never known passion like what my children have helped me feel."

  • Colin Farrell

    Colin Farrell is a father of two: James, his son with former girlfriend Kim Bordenave and <a href="" target="_hplink">Henry</a>, his son with ex Alicja Bachleda. James, Farrell's elder son, suffers from a rare form of cerebral palsy called Angelman Syndrome. The actor has repeatedly made an effort to <a href="" target="_hplink">raise public awareness</a> to the little-known genetic disorder, even<a href="" target="_hplink"> opening up about the syndrome</a>, and the experience of raising James, in an interview with David Letterman. In 2007, Farrell told the <a href="" target="_hplink"><em>Independent</em> that he's<a href="" target="_hplink"></a> "dedicated to helping his son reach his own individual potential and to be as happy as he can be," adding, "I have never thought of my son as being someone with a disability. It goes back to special needs and what is a disability and what isn't."

  • Dwyane Wade

    Dwyane Wade and ex-wife Siohvaughn Wade had a notoriously messy divorce, with Siohvaughn <a href="" target="_hplink">accusing the NBA star of adultery and abandoning their two boys, Zion and Zaire.</a> Still, the basketball player, who eventually won <a href="" target="_hplink">full custody of the kids</a>, has certainly picked up his fair share of honors related to parenting. In 2007, he <a href="" target="_hplink">received a "Father of the Year" award</a> from the National Father's Day Committee and, in 2011, President Obama <a href="" target="_hplink">appointed him to a parenting program</a> geared toward encouraging fathers to become more involved in their children's lives. In June 2011, Wade wrote a <a href="" target="_hplink">piece for <em>Newsweek</em></a> in which he described fatherhood as being the most rewarding part of his life. "All children need their fathers, but boys especially need fathers to teach them how to be men...I had a duty to fight to be with my kids, and I did."

  • Jamie Foxx

    Oscar winner, musician, comic, and composer Jamie Foxx can add another title to his already impressive CV: great single dad. Foxx shares joint custody of his daughter, Corinne Bishop, and <a href="" target="_hplink">has described himself</a> as being a tough parent: "I teach her to be respectful... Kids today don't have any discipline." Despite his busy schedule, Foxx always puts his daughter first. "I want to be a man who shows up for her... I want to have such a big influence on her so that she knows she can call on me for anything -- which she does." Well, we're certainly impressed.

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