I just came across this video on YouTube showing every displayable (with some restrictions) character in the Unicode BMP. (1 character per frame)
Next, the Unicode code point of the day with Wikipedia links to corresponding alphabet or language, which of course reminds me of the series Every character has a story.
Update 11/04/18:
BabelStone comments on the video and hosts a page called Unicode 6.0 Slide Show implemented in JavaScript. Warning: Since the browser displays the Unicode characters, you need to have the required fonts installed on your machine.
