Watch2Gether - Watch2Gether is an app that allows multiple people to watch the same content simultaneously and interact with each other while watching.
Bookcelerator - A curated directory of books that will make you smarter
Metastream - Watch streaming media with friends
Project Ekalavya - Monthly book summaries that you can't forget
StreamParty - StreamParty is a watch communiry, that allows you to watch video streams in sync with the people you care about, on multiple services.
Tertulia - Books Worth Talking About.