Pure Hearts International
Installation was a breeze, only took a few seconds, and one-click, actually. Nice. Nothing really to set up afterwards, it's all pre-set up for you. If you WANT to customize the DEFAULT settings, you can, but you don't have to do so unless you want to do so.
The only thing I saw that I might ever customize is the size in terms of pixels of the recently viewed items displayed, but I'll have to take a look at the size actually in my site first and decide whether to make bigger or larger. They've got it pre-set to the 2nd smallest possible size.
Assuming it's actually working at the site, which I haven't verified yet, looks awesome, especially considering that it's FREE! If I don't come back and complain that it isn't working at my site, assume that it is and was from the beginning.
Good job. :)