Unified Remote, in short, is a great app. Its claim to being "easily the most feature-filled PC remote" may have merit, as Artem will attest. The app, in conjunction with a PC-compatible server, will allow your device to control your mouse, keyboard, and favorite software (think Spotify, Winamp, VLC, Hulu, iTunes, etc.) via Bluetooth or Wi-Fi.
Besides having impressive (and incredibly handy) functionality, Unified Remote impresses with a clean, easy-to-use interface.