Tatooine like planets may be quite common

In science fiction most solar systems are portrayed as single-star systems, with planets orbiting a single star, much like as in our own solar system. Notable exceptions exist of course, maybe the most famous examples being the six-star system in Isaac Asimov's short story 'Nightfall,' and the double-star (binary) system of Tatooine (where Luke Skywalker grew up).

In reality, binary systems are more common than single-star systems and about one-in-four extra solar planets cataloged orbit around a single star in a binary systems where the stars are relatively far apart, about 1,000 AU. It was not known if planets would form in binary systems where the stars that are close together, about 1~3 AU. Recent observations however, suggest that in these systems planets will form more often than not, making Tatooine like planets a real possibilty.

NASA press release.