Like said before he was the one who mastered all type of FK from every distance and every angles. I litteraly never saw him had a shit free kick, always a dangerous shot or at least the shot was decent but the wall did a good job.
He was a very good football player. I remember when he came to Lyon in 2001, he was a nice player but a bit of "free kick mercant" but after his 1 or 2 first seasons, he really was a very good UCL level player onto 2007 then he faded a bit.
While never reaching his level, today the player I would likened him to the most, in his style of play, would be Toni Kroos.