I got some really awesome comment spam recently. Here's an example, from my post on Nerdcore music (I deleted the comment because it contained a spam link):
LOL. I think you may have missed your calling. What you need to do now is get some oversized pants and some dark shades. Add a little bling, and they go on tour. You'll pull geeks out of the woodwork. Heck, I bet you could fill a decent sized coffee shop. On second thought, maybe you should stick to your day job.
If this was written by a human, they put some actual thought and energy into it. If it was written by a chatterbot, I'm seriously impressed. Either way, great work, whoever you are!