I'm used to using workspace/desktop managers in Windows like Dexpot and sDesk that give me a "panner" or "desktop preview" that shows thumbnails of the windows in each desktop, and lets me click in a desktop to move to that desktop, or drag windows from within the panner/manager to move the actual window.
I just installed Ubuntu 12.04, and I'm finding that the default workspace manager seems pretty minimal. Are there better options for a workspace manager, or is there a way to make the workspace manager more functional?