"VADLO is a life sciences search engine, privately owned by Life in Research, LLC., based in Illinois, USA. VADLO caters to life sciences and biomedical researchers, educators, students, clinicians and reference librarians. In addition to providing focused search on biology research methods, databases, online tools and software, VADLO is also a resource for powerpoints on biomedical topics,mainly for which, VADLO was named one of the top 10 Health Search Engines of 2008 by AltSearchEngines".I haven't tested it yet, but it seems it's worth the time to at least take a look at it (maybe in your downtime).
Make sure you let us know what you think of it.
I don't remember exactly how I found this site, but the thing that has kept me coming back is their daily comic strip, "Life in Research" (which is focused on biomedical research, as opposed to PhD Comics which was created by an engineer).
Ok, so it's not as well drawn as it engineering counterpart, but has some good cartoons that are worth sharing.
Here are some of mi picks (I deliberately left some out that deserve their own post. I'll post them later) :