For those interested, I finished my first pass through CT Art, a computer program containing 1200 or so tactical chess problems. I mostly worked by "skill level" rather than by theme. I'll post my score breakdown below because I don't really see anybody else doing so. Overall, I had a success rate of 69% and a "rating" of 2420. Note that on a couple of these, I went back over "erroneous", so the percentages are slightly higher than on the initial pass, but level 50 and up is straight.
By Skill Level
10. 99% (originally 93%)
20. 91% (originally 86%)
Levels 10 and 20 were initially a few percentage points lower.
Note that the "rating" provided has little correlation with real rating. I'm probably a weak class B player at the moment, in case you're wondering, though my real rating is public information if you really want to look it up.