As an observant Catholic, I don't know if it's appropriate to say that I have a favorite Mass, but I do, last night was Maundy Thursday of Holy Week it is remembered as the time Jesus ate a final meal together with the disciples who had followed him for so long. (The Last Supper) The term Maundy comes from the Latin word mandatum (from which we get our English word mandate), from a verb that means "to give," "to entrust," or "to order". According to the Fourth Gospel, as Jesus and the Disciples were eating their final meal together before Jesus’ arrest, he washed the disciples' feet to illustrate humility and the spirit of servanthood. The traditional washing the feet of members of the congregation as part of the Mass as well as receiving the Eucharist on Maundy Thursday is the means by which most Catholics observe.
What is more humbling than to have your pastor wash your feet?