The first thing I noticed about our German import, Daniel Theis, was his aggressive and effective rebounding. Snagging the ball with one hand, bringing it down with a slap into the other hand, and making the outlet pass. I hadn't seen that since Dave Cowens in the 1970's.
Then it was his energy. How could anyone miss it? He was always on the move offensively and defensively, and he would fight repeatedly for a rebound, something Bill Russell said was the most exhausting thing he did on the court.