Best recent line from a spam comment:
For that brief moment of today I had a little bit of sanity and than I had to hit the pavement to go look for a job. At around 9am I came to an impithany. I have no advantage entering the business world.
I was initially just amused, and then it occurred to me that this could be a useful way to track how well your comment spam is doing; you can include a nonstandard word and then search for it. But at the moment, there's only one Google result for impithany and it appears to be nonspam. So I'm back to being just amused.