Office 2010 combines the rich functionality of the Paste Special dialog and the Paste Recovery feature into a new Paste Options gallery. The Paste Options gallery includes Live Preview – hovering over each Paste item allows users to preview the Paste formatting with their actual content. The new Paste Options gallery helps users get the right results the first time, making the task of copying and pasting content into a document quicker and easier by eliminating the repetitive process of pasting, undoing and trying again. The Paste Options gallery shows up in three places– in the Ribbon, on the right-click context menu and in the Paste Recovery on-object UI (OOUI) that appears near content you have pasted in your document. The contents of the Paste Options gallery are contextual. They change based on what the user has copied and where the content is being pasted. For example, copying some data from Excel will yield a different set of Paste choices than if the user had copied some text from Word.
Full Article: Office 2010 blog