The computing world lost one of its great minds and true pioneers yesterday. Douglas Engelbart passed away at age 88, just over a half-century after he joined the Stanford Research Institute (SRI) -- the place where much of his ground-breaking computing research would take place. Among his (and his research team's) many inventions made at SRI are the mouse, bitmapped screens, hypertext, networked computers and elements of a modern, windowed GUI. Should you be among those unfamiliar with his work, we've included a video of his epic and appropriately named "Mother of All Demos" that he gave in 1968 to