I see customers expressing more interest in is SharePoint Search. Many clients are shocked to learn SharePoint has a powerful and very configurable search engine built in. Search can crawl anything from network shares to public web sites. Out of the box SharePoint supports the crawling and indexing of many file types which of course include Microsoft Office Documents. However, SharePoint can be made aware of additional file types such as PDF's and DWG's. Furthermore, IFilters can be installed which allow search to index the content contained within files.
For more information concerning supported file types and IFilters read this Technet Article. The article lists all default file types and commonly added file types. There are also links to configuration instructions. This is a good article to keep book marked as a reference.