Selected answers from the Dumb SEO Questions G+ community.
Alistair Lattimore: Google Analytics provides click maps, you can find them under Content->In-Page Analytics or via Content->Site Content->All Pages, drill into the page you want & use the In-Page tab towards the top of the screen.
Alternatively CrazyEgg or Clicktale also do a great job as well.
Dewaldt Huysamen: Crazy egg is best when it comes to cost effectiveness. Clicky is also not bad with price and better than GA. If you or your client has money clicktale would be the best option. Watching live interaction beats heatmap or as I use it crazy egg with clicktale