One unique linkbait I found is about an SEO crossword puzzle. Actually, it wasn't intentionally done to lure those Precious backlinks. The webmaster thought of creating one just for fun, but it turned out to be a nice linkbait and 1000's of visitors came in just a few days.

An adsense ad located just above the puzzle enable the webmaster to monetize the traffic.

Right now, it even has a PR5. I bet you can think of something unique such as this to drive traffic to your site. It's simple, and yet it does the job.