Sorry for my English, but it's way better then my German writingskills
I really love Berlin since the Loveparade in 2000.
I already knew the proper football roots (al them stadiums in Berlin!!!) that Berlin has, but I was more into clubbing at the time.
Union has my interest since Youssef El-Akchaoui aka Souf Souf Habibi played for our team. He's a cult hero at FC Den Haag and I was interested about his past, so here came Union Berlin. Visit some games and I was hooked.
It's pretty neat that Union has other players from our squad: Santi Kolk (still got his shirt) and Sheraldo Becker. Like Hague FC Fritz, I hope for a third green/yellow Union Adidas shirt...and not one like SV Straelen