Below is a collection of HD quality background images that you can use in your PowerPoint/OpenOffice/LibreOffice Impress-based video productions. Scroll through the collection and choose the background that you would like to use. Then, simply right-click on the your image of choice and save the link to download the full 1920×1080 resolution graphic. If you need help adding these to your presentations then check out these tutorial videos.
My current favorite images are the blueprint style graphics at the bottom of the page.
Important Usage Rights Information
You have royalty-free rights to use these background images in any video production you create for yourself or others with the following limitations:
You MAY NOT distribute the source graphics files in any manner. If you want to share these images with others, please link to this page. The backgrounds MUST be incorporated in a video or presentation file (like PowerPoint) before distribution.
You MAY NOT use the backdrop images as part of a derivative work intended to be distributed as a template or backdrop image.