I think what you actually mean to ask is, what is the easiest way to obtain USD (cash) for BTC.  Because the easiest way to sell Bitcoin now is to sell it.  However, if your objective is you obtain USD for your BTC, that's a slightly different question.  We would be happy to purchase your BTC for 5% under MtGox spot.  We are also happy to use escrow.  Western Union or Moneygram.