Below is a list of the commands included in PowerCommands for Visual Studio 2010 version 10.0. 
Enable/Disable PowerCommands in Options dialog
This feature allows you to select which commands to enable in the Visual  Studio IDE. Point to the Tools menu, then click Options. Expand the  PowerCommands options, then click Commands. Check the commands you would  like to enable.
Note: All power commands are initially defaulted Enabled.
Format document on save / Remove and Sort Usings on save
The Format document on save option formats the tabs, spaces, and so on  of the document being saved. It is equivalent to pointing to the Edit  menu, clicking Advanced, and then clicking Format Document. The Remove  and sort usings option removes unused using statements  and sorts the remaining using statements in the document being saved.
Note: The Remove and sort usings option is only available for C# documents.
Note: Format document on save and Remove and sort usings both are initially defaulted OFF.
Clear All Panes
This command clears all output panes. It can be executed from the button on the toolbar of the Output window.
Copy Path
This command copies the full path of the currently selected item to the  clipboard. It can be executed by right-clicking one of these nodes in  the Solution Explorer:
The solution node; A project node; Any project item node; Any folder. 
Email CodeSnippet
To email the lines of text you select in the code editor, right-click anywhere in the editor and then click Email CodeSnippet. 
Insert Guid Attribute
This command adds a Guid attribute to a selected class. From the code  editor, right-click anywhere within the class definition, then click  Insert Guid Attribute.
Show All Files
This command shows the hidden files in all projects displayed in the  Solution Explorer when the solution node is selected. It enhances the  Show All Files button, which normally shows only the hidden files in the  selected project node.
Undo Close
This command reopens a closed document , returning the cursor to its  last position. To reopen the most recently closed document, point to the  Edit menu, then click Undo Close. Alternately, you can use the CtrlShiftZ  shortcut.
To reopen any other recently closed document, point to the View menu,  click Other Windows, and then click Undo Close Window. The Undo Close  window appears, typically next to the Output window. Double-click any  document in the list to reopen it.
Collapse Projects
This command collapses a project or projects in the Solution Explorer  starting from the root selected node. Collapsing a project can increase  the readability of the solution. This command can be executed from three  different places: solution, solution folders  and project nodes respectively.
Copy Class
This command copies a selected class entire content to the clipboard,  renaming the class. This command is normally followed by a Paste Class  command, which renames the class to avoid a compilation error. It can be  executed from a single project item or a project  item with dependent sub items.
Paste Class
This command pastes a class entire content from the clipboard, renaming  the class to avoid a compilation error. This command is normally  preceded by a Copy Class command. It can be executed from a project or  folder node.
Copy References
This command copies a reference or set of references to the clipboard.  It can be executed from the references node, a single reference node or  set of reference nodes.
Paste References
This command pastes a reference or set of references from the clipboard.  It can be executed from different places depending on the type of  project. For CSharp projects it can be executed from the references  node. For Visual Basic and Website projects it can  be executed from the project node.
Copy As Project Reference
This command copies a project as a project reference to the clipboard. It can be executed from a project node.
Edit Project File
This command opens the MSBuild project file for a selected project  inside Visual Studio. It combines the existing Unload Project and Edit  Project commands. 
Open Containing Folder
This command opens a Windows Explorer window pointing to the physical  path of a selected item. It can be executed from a project item node 
Open Command Prompt
This command opens a Visual Studio command prompt pointing to the  physical path of a selected item. It can be executed from four different  places: solution, project, folder and project item nodes respectively.
Unload Projects
This command unloads all projects in a solution. This can be useful in  MSBuild scenarios when multiple projects are being edited. This command  can be executed from the solution node. 
Reload Projects
This command reloads all unloaded projects in a solution. It can be executed from the solution node. 
Remove and Sort Usings
This command removes and sort using statements for all classes given a  project. It is useful, for example, in removing or organizing the using  statements generated by a wizard. This command can be executed from a  solution node or a single project node.
Extract Constant
This command creates a constant definition statement for a selected  text. Extracting a constant effectively names a literal value, which can  improve readability. This command can be executed from the code editor  by right-clicking selected text.
Clear Recent File List
This command clears the Visual Studio recent file list. The Clear Recent  File List command brings up a Clear File dialog which allows any or all  recent files to be selected.
Clear Recent Project List
This command clears the Visual Studio recent project list. The Clear  Recent Project List command brings up a Clear File dialog which allows  any or all recent projects to be selected.
Transform Templates
This command executes a custom tool with associated text templates  items. It can be executed from a DSL project node or a DSL folder node.
Close All
This command closes all documents. It can be executed from a document tab. 
Happy Learning !!!