I love this show. The characters are down to earth and relatable. Nathan Fillion is charming and is a great lead. All of the cast have wonderful moments of vulnerability, compassion, and humor while still showing the depth of intensity for the job.
I don't always get to watch it when it airs, but I always watch it on Hulu. In fact, I've rewatched all of the seasons.
The only downside I have found is wishing the network would be more consistent with date and times of the episodes.