There are a million places to get commentary (hit just about any blog on the sidebar to start; Southern Appeal is among the best). In contrast to Ann Coulter's reasonable misgivings about how little is known about the next Mr. Justice, we can use Catholic Analysis' round-up for a more positive view.
Points that Matter:
Judge Roberts is a devout Catholic.Point That is Very Encouraging, but Doesn't Necessarily Matter (see First Ladies Bush):
Fr. Frank Pavone endorses the president's choice.
Jane Roberts has served as EVP of Feminists for Life.NRLC has more background on the Roberts nomination.