I remembered this one when I read your post:

A planet around a double star
From the long-term drift observed in the radial-velocity measurements during the past 15 years with another spectrograph at the La Silla Observatory, it is known that Gliese 86 is not a single star, but in fact a long-period "spectroscopic" binary system. The separation between the two stars is probably more than one hundred times larger than that between the planet and the star it revolves around. The observed characteristics of the new planet, e.g., its rather large mass and almost circular orbit, associated with this double-star nature, indicate that planetary systems may form in other ways than the standard agglomeration scheme.



http://www.astronomynow.com/breaking/981124newplanet/

Marcia