After a recent post on indexing Acrobat PDF documents in Windows SharePoint Foundation 2010 (especially on SBS 2011 Standard), I was asked whether the process is the same for SharePoint Server 2010.
It is much easier for SharePoint Server 2010 as it was designed with the ability to index external file types from the start. You still need to install the PDF IFilter and make some registry changes. After that you simple need to tell the search service in SharePoint Server 2010 to index PDFs.
Here some references to help: