The e-IRGSP4 project has created a 15-minute video introduction to e-IRG. e-IRG is a European advisory group on e-Infrastructures on a European scale. The video is on Vimeo: https://vimeo.com/127725381. You can also download a PDF version from the e-IRG website:  http://e-irg.eu/documents/10920/283008/General+e-IRG+Presentation.pdf (25 Mbyte).