"ClipGrab is a free downloader and converter for YouTube, Vimeo, Dailymotion and many other online video sites."

Like Instapaper for videos.

It's supposed to be able to download videos from antenna.gr.

"Reddit user Moriturii noticed that pressing keys 1 through 9 skips to 10% through 90%, respectively, and pressing left/right arrow keys jumps between those points."

Home to "YaysYoutube", "Youtube Wide" and "Disable ClickTracker".

"Adds an Auto Replay option on YouTube video page in your Safari 5 browser. So you no more have to create single video playlists! You can also select a portion of the video to be auto replayed. Works well with the Flash and HTML5 YouTube player."

"This extension removes the need to use flash on YouTube by converting all videos to their HTML5 video tag equivalents. It also has the added benefits of decreased CPU usage compared to flash, and the removal of in-video ads."

"The button allows you to quickly enable or disable the stylesheet should you, heaven forbid, actually want to read the spiteful bilge of your fellow man."