Blinkist‘s feature guide is designed to be extremely non intrusive and elegant – it’s just a minimal panel that drops from above, contains everything you need and is dismissible with one tap. Clear, minimal, quick!
Even for something as simple as a wallet you can make an engaging product video. Check out how Bellroy shows off their wallets.
Check out Reporter app’s usage of colors as part of their web and mobile experience.
Facebook recently launched their Paper app – a great inspiration for innovative navigation patterns (in this screenshot – category is on top, contents on the bottom, both are slidable). Check the gestural interactions as well.