Second Chances

Riker and others land on a place where Will had landed eight years earlier. There, they meet ANOTHER Will Riker--identical in every single way. It turns out that the transporter created another Riker and abandoned him on the planet all that time! The big difference is that their experiences and memories from the last eight years are different--otherwise they both are Riker! And, the newly discovered Riker REALLY wants to pick up where he left off with Deanna Troi.

This is a very odd episode, as Riker I seems VERY defensive and competitive towards his newly discovered self. This didn't make a lot of sense--one of the downsides of this otherwise decent episode.