I have been an employee of Overstock.com for close to 8 years now. Every year Overstock has a Technology Day where employees present on technology and simply have fun. This year I presented on RxJava with a colleague of mine. We had a lot of fun preparing for the presentation while learning as well. We also won a small reward for being a being a popular presentation :-)
The following are the slides that we are sharing from our presentation. I would recommend you check the RxAir Demo by my colleague, it's pretty sweet.