How about offering video email? There have been many companies who have tried this, including this new one, MailVu.
Hey, everyone is pushing video right now including Skype and the conferencing companies. Take advantage of the buzz.
Another idea I sent out via email (Are you on my email list?) was for Network DVR and video surveillance equipment. Night Owl NONB-88500 Network DVR and Cameras Security System - 8 Cameras, 500GB HD, H.264 Compression, 8 Channels.