The Prometheus movie website has a blinking star that's showing Morse code as a hint to more teaser content. Take that animated gif, break it into frames, pull out the primary color from each frame's histogram, then requantize the time-variant signal into buckets to finally back out a clean Morse code sequence and then map that into letters and numbers. Fun!
Many of us ham radio operators can hear morse at pretty high speeds but I remember being on a bus with a friend who was well known for being the best of the best. He was staring at an ad for the longest time before I interrupted him to ask why.<p>There was some morse printed on the ad, just one line, but because we are so used to listening to morse, interpreting it visually took far longer.