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.

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.