Several reputable manufacturers make pod based espresso machines. The Pod Merchant sells a wide variety of coffee pods from many different sources (nearly all Italian). I would have to agree with the post above: because they are ground, then packaged and shipped, and often sit on the shelf for a while, they tend to be stale. The time lag is just too long for any chance of freshness. They ARE convenient at work, and make cleanup a breeze. One possible option is (I really hate to say this)... Charbucks espresso pods. They are dated, and since they are not being shipped overseas, have a better chance at being less stale.
Of course, if you are located in Europe, you might find an Italian brand that is dated and shipped only a short distance, giving it a fighting chance of freshness.