If you use MailSmith, this simple AppleScript allows you to quickly view all the mails you have exchanged with the selected person(s) in your Address Book. And this is much quicker than entering the request through the Simple Query or Advanced Query menus.
[robg adds: I don't have MailSmith, so I can't test this one...]
Mac OS X Hints
http://hints.macworld.com/article.php?story=20040429054710434