I like its built-in IR blaster which opens up big possibilities. such as the remote control of home theater, home automation devices, and in my case LCD projection screen for work. With all these remotes in one phone, there is no need to carry lots of accessories or the problem of forgetting the remote.
Keep an eye for more Remote Control apps that will be coming to the market.
The Galaxy S4 Remote by Zapp IR is one example. It can store up to 15 remotes on your phone.