The Catholic News Service has available online a nice six minute video explaining the reform of the Mass after Vatican II, and some of the concerns many have about the re-entrance of the Extraordinary Form (often called the Tridentine form) of the Mass. A professor from the Anselmo, a pontifical university in Rome, narrates the helpful information. The misunderstandings of what the post-Vatican II liturgical texts say in reference to the Mass as both a sacrifice and a supper is a most helpful reminder that in the Judeo-Christian tradition, sacrifice and meal were always joined in both liturgical practice and in the theology of the worship of God by sacrifice.
Here is the link. Look for the small video window half-way down the page.