Be sure to switch on HD!
Here's an old, yet unreleased prototype showing a reinterpretation of Android's timepicker. It's one of my most complete prototypes I've worked on, spanning topics like ...
* ... coming up with a new UI element - I used to call it the 'mercury slider' - that A) fits the use-case (a hybrid radial-menu) on a functional and aesthetic level and B) feels like a natural extension of Material Design's current family of UI elements.
* ... improving on while keeping it's current functionality, which results in a flat learning curve, helping to bridge all sorts of skill levels. (Did you notice the current timepicker doesn't *really* work like a radial-menu, even though it's such a natural fit?)
* ... trying to increase the joy-of-use / 'itch' while also improving it on a functional level (dat 'infinite' Fitt's score!).
Anyway, while I unfortunately can't share the prototype, I'll happily try to answer all the question you might have about it! (@ Mohammed) :)
btw: I'm curious to hear what our Googlers (Joshua / German / Min-Sang / Fran / etc.) think about this!