I just got 150+ spam comments about backgammon, of all things. Anyway, some of the comments were very long, as they included dozens of links as well as text in the body. I'd like to see a plugin that shows a user-defined comment length so that it's not so ugly to have to scroll through hundreds of lines of crap.
While I'm thinking about it, it would be nice to have the comment moderation show the name of the post title rather than simply hyperlinking to the actual article.
With Mark's Plugin competition going at Weblog Tools Collection I was thinking that if anybody needed some ideas for a new plugin I would toss out whatever ideas I might have.