In the video posted just below of the Communion chant of the Baptism of the Lord, celebrated by the Holy Father in the Sistine Chapel, a Dominican Father in black and white choir dress appears prominently in the background on the right beginning at the 1:40 mark. He is the Papal Theologian, Msgr. Wojciech Giertych, O.P.
I thought some of our readers might enjoy this talk he gave on Virtuous Human Action. I had the privilege of hearing this talk in another venue that year.
"Virtuous human action-- an icon of God. Aquinas's vision of Christian morality." Fr. Wojciech Giertych, OP from DSPT on Vimeo.