Jeffro, Thanks for sharing these plugins. I also like WordPress Conditional CAPTCHA. It redirects spam-flagged comments to a CAPTCHA page. If CAPTCHA is entered correctly, comment gets moved to moderation queue. Pretty useful for me since my site is swarmed by spam-bots, all of whom fail to pass CAPTCHA.

By the way, is it possible to use WP Ajax Edit Comments but without the Ajax effect?

@Anne - Problem is -- when you put everything in functions.php -- when you switch themes, you'll have to manually port functionality to the new theme. With plugins, you don't have that problem.