There is a Catholic mass in English every Sunday at 10 AM at MADRE ADMIRABLE church located at Arroyo 931. This is close to the Plaza San Martin. The website (http://www.madreadmirable.com.ar/documentos/massinenglish2008.htm) says that there is a breakfast the first Sunday of the month. It's really EVERY Sunday immediately after the 10 AM English mass. It's more like a coffee hour and a chance to meet people. Many Argentines attend because they like the idea of using their English. An interesting note is that this beautiful church is across the street from the former Israel embassy which was blown up by terrorists (apparently HAMAS). A lot of people were killed including one of the church's priests.