I'm currently working on a pinball game. Some bug reports have come in about the ball going through flippers. It's not an issue foreign to the Unity forums; and while they've been helpful, I still haven't been able to nail the problem to a releasable level of quality.
I think the best approach to fixing this problem is one that can also benefit the Unity community at the same time. I have a sample project up at http://www.gamieon.com/pinballtest/G...inballTest.zip which is a sandbox to diagnose and fix the problem. I think that when it's fully working, it would be a good project for Unity developers who are interested in making pinball games to look at because it's ready to "play" out of the box.
While I'll focus the QA discussion at http://forum.unity3d.com/threads/851...inball+flipper ... what's the best way to go about putting up this kind of project for Unity developers to download and benefit from? And how should it be packaged?