By Michael Ausiello
Updated October 19, 2010 at 08:49 PM EDT
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Image Credit: Mitch Haddad/ABCGilles Marini is taking a little break from shilling skivvies on Brothers & Sisters to boogie down on Royal Pains.

The ex-Dancing With the Stars runner-up has been tapped to guest-star in the second-season finale of the USA Network smash. He’ll play Niko, a dance instructor tasked with teaching Divya and Raj the fine art of the tango in the days leading up to their wedding.‬

The second half of Pains‘ sophomore season kicks off Jan. 20.

Rescue Me‘s Will Chase will also appear in the season 2 finale as the head of an MS foundation who makes Jill an intriguing offer.‬

Brothers & Sisters

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