I wanted to be able to paste as plain text--stripping away any formatting--without first pasting into and out of a text editor.
So I researched a script and found one here http://hints.macworld.com/article.php?story=20040204170653788
set the clipboard to «class ktxt» of ((the clipboard as text) as record)
So I took that script and launched Automator.app.
I created a Service.
In the workflow, I added the Run AppleScript action and pasted the command into the action.
I saved it as PastePlaintext.
Then, I went to System Preferences / Keyboard / Shortcuts / Services / Text. I added a shortcut to PastePlaintext. I did not want to overwrite the default paste shortcut in case I do want to paste formatting. So I added ⇧⌘v.