Saw one last year that required enough Android experience that only the guys who were acquired by Google would be able to fulfill the requirement. It was for a mundane geeks-for-hire type company that churn out template type apps so probably didn't need anywhere near that level of experience.

I was at an interview for a job ad that had similar illogical requirements. When it was clear I wasn't getting the job for other reasons, I pointed out their error. They got all huffy. My doing that is a bad practice people-skill-wise, but it sure felt good getting deserving fools to eat their own cat-food.