I have been spending the last few weeks working on an Amazon Echo app to create a voice interface to Plex.
You can do simple queries, like "what's on deck," but far more interestingly you can actually request a particular show or episode to start playing on your Plex client.
Here's a demonstration video of the first proof of concept:
I've been doing a lot more work since then, and now have support for playing a specific episode, confirming the show if Alexa is unsure that she heard you right, and a random high-rated (top 10%) episode.
I'll be creating a new demo video once I get all of my 1.0 features in, and then it'll be on to multi-user support so that this can actually be published and made available on the Alexa app store.
Great news for Plex and Amazon Echo fans alike!! I am going to be working directly with Plex to make an official Alexa Plex skill, which will be totally streets ahead.
With this partnership we'll be able to make this much more than I could have alone. Keep your eyes peeled to Plex's official channels for news when it's ready