The star KIC 8462852 doesn't just have a snappy, memorable name, it's also an unsolved anomaly 1,500 light years away.
There's something big in the way of KIC 8462852, also known as "Tabby's Star." About 20% of the light the star emits is blocked from our vantage point. And it's probably not a planet — even one as large as Jupiter would only block 1% of a star the size of KIC 8462852.
Some have suggested it's a Dyson Swarm, a less complete version of a megastructure known as a Dyson Sphere, which surrounds a star and harvests its energy output. We'll probably get a better idea of what's going on with the star when NASA launches the James Webb Space Telescope in 2018, but until then, "unknown alien megastructure" sounds like a pretty cool explanation.