If you are a security researcher and you want to to do malware analysis on the Android platform, you must check the following Linux Distros.
Android Malware Analysis Toolkit (AMAT) [website] [Google] [Sourceforge]
A Linux distro focused on Mobile Malware Analysis for Android.
REMnux [website]
REMnux is a lightweight Linux distribution for assisting malware analysts with reverse-engineering malicious software.