gistfile1.js

var util = require('util'),
	http = require('http'),
	connect = require('connect'),
	express = require('express');

var app = express.createServer();

app.configure(function(){
	app.use(express.bodyParser());
	app.use(express.errorHandler({ dumpExceptions: true, showStack: true }));
});

app.all('/', function(req, res, next) {
	console.log("params:");
	console.log(req.params);
	
	console.log('body:')
	console.log(req.body);
	res.send("Response!");
});

app.listen(8080);

// requesting http://localhost:8080/?a=9 via GET / POST
// prints...
// params:
// []
// body:
// undefined

Last ditch effort:
console.log(require('util').inspect(req, null, false));

And then wade through a page of information.