Site Templates in SharePoint

Site template that are available in SharePoint 

 List of commonly used Site Templates in SharePoint 2010:

•  Team Site 
•  Blank Site
•  Document Workspace
•  Blog
•  Group Work Site,
•  Visio Process Repository, 
•  Basic Meeting Workspace
•  Blank Meeting Workspace 
•  Decision Meeting Workspace 
•  Social Meeting Workspace 
•  Multipage Meeting Workspace ,
•  Document Center ,  
•  Records Center
•  Business Intelligence Center 
•  My Site Host
•  Personalization Site
•  Enterprise Search Center
•  Basic Search Center 
•  FAST Search Center 
•  Enterprise Wiki
•  Publishing Portal
• Publishing Site

A preview of all above site templates are listed from ref:

http://office.microsoft.com/en-us/sharepoint-server-help/a-preview-of-the-sharepoint-server-2010-site-templates-HA101907564.aspx