Languages to learn

(tags programming, languages, Ruby, Javascript, D, Io)

Well I actually like the Windows cool-aid thank you very much. Yes I'm in M-x ruby-mode right now but I think I need to learn javascript and D for more edification:

• Javascript can be used from the Windows command line
  wscript.exe "path to script.js" //E:javascript
  sure it's hard to remember the //E:javascript but check out TortoiseSVN's "diff viewer" for Microsoft Word .doc files. Javascript calling the Microsoft Word ActiveX object.
• D. Well, I want to learn to make a shmup, ala Parsec47. I had this wierd idea of making a shmup in Ruby... Heck, make it in Io, does that make any sense?