I gotta say that, given how much comment sp@m is out there and how much time I spend deleting it, it comforts me a bit (and reminds me that the MT set-up that Sarah's worked out is amazingly effective) when I find sp*mmy comments that have snuck onto actual bigtime blogs and sites. I can't remember which ones but I know it's happened a couple of times in the last few weeks. At least all that crap ends up held here so I just have to go in and delete it every once and a while.
Something else I've noticed (probably this is old news to most people but I just twigged to it recently) is the school o' comment sp#m that includes references to topical news items. Last week there was a spike in Cordoba Institute/Burlington Coat Factory mentions. Yesterday there were several Roger "Big Head" Clemens mentions. iPhone cases have been getting lotsa play as well. I also like the ones that complain about comment sp&m. And the ones that complain about what a crappy blog this is (a nice contrast from the much more common "how great this blog is").
Recent winners in the names category include Bulah Reichenback (points deducted for not knowing how to spell Beulah) and Cornelius Ganesh. Which is fabulous and I'm going to have to steal it.