Solved: Name of a German dance club song that I heard while in Berlin in 2009

I was in Berlin in September of 2009 and all over the clubs there was a song that they kept playing. People would go nuts for it and they would stop the music and people would sing the chorus. It was very catchy. One place I heard it that I remember is at Club Matrix. Any help? I do not know any German, but it seemed like they were saying "Hey!" when they were starting it off.
Thanks so much!!

maybe it could be this => http://www.youtube.com/watch?v=Db1VcB6Qwgc
Original Song is this => http://www.youtube.com/watch?v=jLGmosSppng

there are some Remixes out there so i don't know which one you heard if it's this song

try>
Paul van dyk - For angel
http://www.youtube.com/watch?v=jNqT3yLZ9aw

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The song created a revolution in Germany n is the most popular song in Germany as well as Europe . Its also one of my favorites .
It may not be your song

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Also try>
http://www.youtube.com/watch?v=9NAaLWV31Ok

Amazing! I never thought I would find out. It is the Frauenarzt & Manny Marc song that I heard.