The first eponymously titled Killing Joke album (they released another one 23 years later) is by far the better of the two. It's usually lumped into the post-punk section of your local store, but it doesn't really belong there, or any other pigeon hole - it's a musical anomaly for the era, years ahead of its time. It was a huge influence on the industrial and metal genres, though. All those bands that you love now loved the Joke long ago. It was self-produced, so sounds a little flat in places, but with a good amp and some reluctant tinkering it can still kick. Time may have dulled its sheen, and parts of it may sound like a cheap porno soundtrack, but none of that has diluted its importance or its power.