If it involves rereading my papers/theses multiple times with a little red pen until about 3:30 AM, yes, then I suppose you could call me a perfectionist.

But I owe it to Harry, after all.

It doesn't really hamper my productivity or cause me to get behind, because I tend to do my research well in advance and thus writing the paper itself is really the final, easiest step of them all. And even then, I can crank out a decent paper in a relatively short amount of time.