Another favorite is E.M. Forster's prediction of video calling and more in 1909 with The Machine Stops[2]. "But it was fully fifteen seconds before the round plate that she held in her hands began to glow. A faint blue light shot across it, darkening to purple, and presently she could see the image of her son, who lived on the other side of the earth, and he could see her."

[1] https://news.ycombinator.com/item?id=18896513 [2] http://archive.ncsa.illinois.edu/prajlich/forster.html