Use videos to deliver bug reports
Giles Bowkett found a bug in GitHub, and documented it with a video. This got me thinking about embedding videos in JIRA (or your favorite issue tracker) on bug reports. I don't know if there's a way to do this at the moment, and it'd certainly require a bit of infrastructure to support. But think of the possibilities. Instead of writing out what steps are necessary to recreate a bug, testers can upload a video capture...
Then again, videos still aren't greppable.