Google Presentations now supports drag and drop image insertion from other Google Presentations and from web pages. Users can also add basic vector shapes to slides, import individual slides from other Google Presentations and from PowerPoint PPT files, and embed slideshows from Google Presentations into web pages.
Standard, Premier, Education and Partner Editions
How to access what's new:
Sign in to Google Docs, open a presentation and drag an image from a different web page into a slide to insert the image. Click the shape icon to insert a shape, and click the 'Publish' tab to see publishing and embedding options.
For more information: