In terms of the sort of player who thought they'd be, or expected them to be.
This has just popped into my head after thinking about Mo Besic on the Pulis thread. I expected Besic to be a tough-tackling, nasty, aggressive sort of player but he didn't really show much of that. Didn't he have a poor disciplinary record before he played for Boro? I mentioned Parlour on that other thread as well. He was a right nasty b*stard at times, with incredible strength and skill. You could see why he'd spent so long playing for Arsenal. He was a superb footballer.
I also remember being absolutely blown away by Christian Ziege. We used to sit in the east lower when he was playing left wing-back and his touch was insane. And his power, running power as well. The accuracy in his left foot, pinpoint perfection. He had everything.