i've uninstalled, reinstalled, opened new projects, tried clicking every button and changing every menu item. Premiere won't show a single clip from the media browser, effects browser, timeline, project, anything. I can only get a couple of windows to pop up ever. I've tried everything I can think of. It was working earlier today, and I tried to open my project and I couldn't see any of it. I tried opening old projects I'd already finished and they all had the same problem.
Without proper system information and other details nobody can tell you anything.
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-Premiere Pro Video Editing Information FAQ http://forums.adobe.com/message/4200840
Try choosing one of the preset Workspaces. Maybe that will bring them to the front if they're somehow hiding.
Are you using two screens? Maybe they're just minimized on the second screen?