Bill and Tamás give classes in set dancing and irish dancing.
Bill has been in Berlin since 1994 and apparently had classes running almost every day of the week. Their school offers all kinds of Irish Dancing (Traditional, Set and Céilí) as well as regular Irish Parties with live music. In the past Jacqueline Toner gave some of the classes.
Latest update (May 2003):
We are hearing reports that Tamás Diebel takes some of the classes and that there may be a certain lack of continuity in the classes.
You may want to check out one of the other groups in Berlin as well!