serve-file.js

/**
Node.js script to serve a file locally, letting you set appropriate Content-Type
TODO : parameterise
 */

var sys = require('sys'),
    fs = require('fs'),
  http = require('http');

http.createServer(function (request, response) {
  response.writeHead(200, {'Content-Type': 'application/javascript'});
  fs.readFile('live_scores.json', function(err, data) {
	  if (err) {
	      throw err;
	  }
	  response.write(data);
          response.end();
      });
}).listen(8000);

sys.puts('Server running at http://127.0.0.1:8000/');

Didn't work with node.js 0.1.22, but upgraded using homebrew to 0.1.91 and works fine. I'm guessing that fs wasn't in the earlier version or something?