If you're interested in playing, check us out at www.discosur.blogspot.com, every saturday from 16.30 on in Ciudad Universitaria. You can also join a team, and form part of our league.
I know that there is an English Mass every Sunday at Mater Amabilis on Arroyo St. and there is an ecumenical protestant service in United Community Church in Acassusso, and they have a bus that leaves from downtown that will take you there... The Buenos Aires Herald usually also has church...