OLE is an awesome tech that I am sad isn't more widely used. The idea of being applications being portable toolboxes that can be embedded inside of other applications is just so cool. I remember embedding, IIRC, Print Shop Pro media inside of Word and when I clicked on the graphics the PSP UI appeared! Well after 10-20 seconds of hard drive thrashing it appeared, and then operated at about 5 fps.
Cool idea though!