UI Designs Elements
Umano11 30 of the most beautiful and well designed Android apps
Login Page - Flat Design by Ridwan Pujakesuma, via Behance
Interesting menu interface, make me feels like I want to do it in HTML.
20 Fantastic Examples of Flat UI Design In Apps
Dribbble - 02_BARRELEATSAPP_Main.jpg by Jan Cantor
Interesting use of the hot dog menu and :before :after psuedo elements to give the drop down a nice look.
Menu by Rovane Durso