Harrison,
As an Android developer, the Sampler Demo code is a horrible example. A simple tutorial connecting to a single type of device, using Android idioms is greatly needed. The Sampler app looks like it was written as C code, then ported line by line with no documentation and barely any comments.
I've been a long time Ant+ user, and I'd really live to see it's use spread. After looking at the SDK docs, it's clear why it has not been more widely accepted.