Apparently Hayden Christensen pitched an idea to the USA Network back in 2005 about a doctor who makes house calls to the afluent. The project was coincidentally called "Housecalls." While the show never got made, Hayden and his brother feel that the currently running USA program "Royal Pains" bears a stong resemblence to their premise. Rather than storming the USA Network headquarters with the 501st, the brothers have decided to file suit. Click here to check out the source article with a bit more detail at FoxNews.com.
Thanks to Justin, John and Vehder for the heads up!