SeatGeek - Buy Event Tickets is an excellent application that helps you to buy and resell tickers to thousands of sporting events including MLS, NFL and NHL, concerts, festivals, and theaters shows.
Metastream - Watch streaming media with friends
StayIn - Answer a couple of questions and get a movie to watch
Watch2Gether - Watch2Gether is an app that allows multiple people to watch the same content simultaneously and interact with each other while watching.
Gametime - Last minute sports, concert and theater tickets.
Hyperbeam - A better way to watch together online