SharePoint 2010 and Exchange Calendar overlays(Via Joerg Sinemus)

Extracted from the original post

Some additional information when you think about Exchange Calendar overlay(s).

You might get the feeling that we talk in this article that more than one Exchange Calendars are possible.
http://office.microsoft.com/en-us/sharepoint-foundation-help/work-with-multiple-exchange-and-sharepoint-calendars-in-one-sharepoint-calendar-HA101777171.aspx

When you use a SharePoint Calendar and you chose to add an Exchange Calendar as an overlay it will add always the Exchange/Outlook calendar information for your own account and you cannot chose a particular Calendar e.g. for a meeting room.

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