I found this the other day! It’s just awesome.

Great post at maclife.com!

If you frequently copy email addresses out of Mail using the Control-click contextual menu. By default, Mail.app includes the user’s real name as well as their email address — that is, until you take a visit to Applications > Utilities > Terminal and type in the following with Mail.app closed: defaults write com.apple.mail AddressesIncludeNameOnPasteboard -bool NO — goodbye, real name, hello email address only!

Source: maclife.com | 6 Secrets of the Mac OS X Mail App