The first eponymously titled Killing Joke album (there were 2, the other was 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 anywhere; it's a musical anomaly for the era and was years ahead of its time. It was a huge influence on the industrial and metal genres. All those bands 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 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.