Oh man, I can remember when the Windows 9x/Motif/Nextstep look was so modern, we thought the future of UI was going to be more of the same: huge bevels on the buttons with maybe a texture map. Think the buttons from the menus in Super Mario 64, and then go watch some old 90s scifi or other technology-themed movies and see how much their "futuristic" UIs looked like that. The Lawnmower Man and some scenes from Hackers come to mind.