Using web3 detected from external source. If you find that your accounts don't appear or you have 0 MetaCoin, ensure you've configured that source properly. If using MetaMask, see the following link. Feel free to delete this warning. :) http://truffleframework.com/tutorials/truffle-and-metamask

web3.eth.getBalance(myAccount, web3.eth.defaultBlock,
        function(error,result){
          if(error) {
            console.error("Error while retrieving the balance for address["+myAccount+"]: "+err);
          } else {
            var balance = web3.fromWei(result.toNumber());
            console.debug("Balance for address["+myAccount+"]: "+balance);

          }
        }
      );

# testrpc -m "Insert your unlock words here" -u 0 -u 1