A web site that translates text into Morse Code. I remember way back when (get off my lawn, people!) I had to be able to send and receive at something like 5 words per minute (absurdly slow) in order to get a basic certification of some sort in my electronics class. Now I remember exactly five letters: S and O, of course, E and T because they’re just one symbol each, and L, because of the mnemonic: the girls love it.
Check out this website I found at mattt.github.com