Who Am I?

I am a 39 year old professional racer who is known for my aggressive nature and determination to shake things up and keep others honest in the peleton.  I ride for one of the top teams in the world.  I don't win many races, but have certainly won my share of big stages and stage races.  I ride in support of my teammates.  I don't take myself to serious and still enjoy racing my bike for a living, but my 5 children are ready for me to retire.  I am German and currently ride for Saxo Bank.   Who am I?