The problem with finding new technology videos that are cool right after April Fools' Day is the distinct possibility that the video is fake. But in this case, I think it's a real video (if it isn't, then the joke's on me). Here's a report from DigInfo TV that talks about an interactive poster that reacts with different images when a person gets close to it (including kissing the picture).
There's about a million different applications for this if it's not a joke, and of course you can probably think of all of the nasty ones. I'm not sure this would have a market beyond Japan, though, it seems that kissing a monitor in a public space wouldn't be very hygienic.
Keith Shaw rounds up the best in geek video in his ITworld.tv blog. Follow Keith on Twitter at @shawkeith. For the latest IT news, analysis and how-tos, follow ITworld on Twitter, Facebook, and Google+.