Some crazy folks called the MacWarriors over at University of Illinois at Urbana-Champaign have created 3DOSX, an OpenGL-based file browser. This thing is tons of fun to play with and, a few graphical glitches notwithstanding, looks terrific. I'm not too sure how useful it is though (it reminds me of TurboGopher, which was also loads of fun to play with and almost impossible to use for actually navigating gopher-space).

Note: the download says its 516k but its actually 1.5 megs (fyi for the modem-bound).

Link