lrkr
I can see your point. Transubstantiation is pretty much central to their whole church service. But I can assure you that outside of the church services, the flock participate in many different charitable services and alot of that is also coordinated, and overseen by many priests, friars and many nuns. In contrast to protestant groups, catholics stress works along with faith...only the catholic parishoners actually get the good works right vs the bogus self-serving field service "works" that the WTS plugs.
You'll find all kinds of Catholic charities providing medical and food services. Heck the local catholic highschools yearly have a fund-raiser around Easter-Time to send money to the needy in the 3rd world. The catholic highschool I went to also recently had a teacher (also a deacon) and a slew of students spend most of the summmer in central america to provide wells for small communities. So don't be too shocked about what that priest said. Transubstantiation is how they all supposed mystically commune with God, so its very important for the priest to perform that function. But along with that communion those who are motivated to really practice the catholic faith do a world of good.
P.S. I'm not a Catholic (only scored 22% Catholic or there abouts, in that beliefnet poll)