Maybe a bit off topic - but I've got a late 2006 MB C2D, (soon to be replaced, but will live on as a secondary machine) that can't run ML.
If I could get Lion on there still, what would be the recommended OS for that machine. It's currently on Snow Leopard. I don't really need Rosetta much anymore since X-rite updated it's monitor calibration SW.
Machine (dead battery) will mostly likely be used as an iTunes server for the household, plus occasional other usage.
Thanks
If it will be occasionally used to browse the Internet or to consume media that was obtained from the Internet, then I would strongly encourage you to use an operating system that is still receiving regular security patches.
OS X Lion is likely to continue receiving security patches at least until the follow-up to Mountain Lion is released; OS X Snow Leopard has likely already stopped receiving security patches. (Although Apple may break with their traditional behaviour and provide a little more support for Snow Leopard specifically because it represents the end of the road for 32-bit Intel machines.)
Therefore, personally I would strongly recommend you should upgrade to Lion if you can manage to get your hands on it.