The BurningBird has a quick and easy fix for MovableType users to try to help stem the tide of comment spam. According to Mark, it's just a "club" and not a "lojack", but I'll take what I can get until someone figures out how to implement an image captcha for MT.
Check it out and by all means implement Burningbird's Comment Spam Quick Fix!
The second step in the process, at least for me, was to implement Jacob's suggestion and add an "Edit/Delete this Comment" link within the comment notification email. At a minimum, this will make it 100 times easier to delete a comment than going through the multiple screens required to actually delete a comment. Heck, maybe even the wife will use it.