Email composition field variables: Can I grab information from logged-in user?

In Email composition: Is it possible to grab field data from logged-in user instead of assigned-to or created-by or modified-by?

Any ideas? We just want the current users name (first and last name) to appear at the end of the email message…

If it’s too complex to change the email template mechanism, is there a way to trigger some workflow code when hitting the email-address link? That way I could write the name of the current user (triggering the workflow) to a custom field in the leads module. Then add that custom module data to the email template… dirty, but might work. Not sure how to fire custom code via link though!