My first visit to Berlin was in 1978 as part of a 2 week holiday to the old GDR with my parents/sisters. It has given me a lifelong Ostalgia and I try to get back there regularly and lap up any decent books/films on the subject or just set in that era.
I saw 2 Copenhagen games last season. The first was good, but freezing cold! The second was the last game of the season and I bit like a friendly with nothing on it and the crowd not so interested. Easy enough to get tickets though.