Some time ago I stumbled upon the Prelinger Archives. For those unsure:
Its goal remains to collect, preserve, and facilitate access to films of historic significance that haven’t been collected elsewhere. Included are films produced by and for many hundreds of important US corporations, nonprofit organizations, trade associations, community and interest groups, and educational institutions.
Although I haven’t had much time to review lately, I purposefully chose films that had no prior reviews to help get everything reviewed once at least. I see now every single one I reviewed has other reviews, which is cool. 
My reviews can be found here, and in future in the links on the right hand side of this weblog. You’ll notice I use the name Roland Deschain, which is just a handle of mine.
