Android: Unified Remote is easily one of the handiest apps on Android for remotely controlling your PC. Today it got even better with a huge update that brings a new UI, plus a lot of extra features.
The new interface includes a slide-out sidebar navigation panel and quick links to saved servers. The full version also includes a much simpler widget editor. The new version is still rolling out to the Play Store, starting with paid users. If you're not seeing it on your device, just sit tight while the rollout finishes.