Star Trek tackles one of the big topics here - what is life? - and while it doesn't do it in any kind of flashy or memorable way, it is a solid episode. Much of that is because we see the decisions that Data has to make and the episode manages to become genuinely tense because of it. There's a bit too much technobabble and the Exocomps look a bit silly, but there's a strong core to this.
Even though she isn't a major player in this one, I think Doctor Crusher comes off really well here. She's fun, I would want to hang out with her. Really enjoyed the poker game at the start.