Dälek is not something you put on for an immediate burst of sound, Dälek is like some sort of organic hip-hop species that attaches itself to you with weird industrial sampling and heavy, repetitious beats. The New Jersey duo have been creating their own territory within the genre of hip-hop for the past 10 years, staying true to their sound with each new release. There's some interesting discusson on staying fresh after 10 years in this interview.
If you're new to Dälek (pronounced 'Die-a-leck'), start out by listening to their 2007 release, Abandoned Language. Stylus gave it an A, saying "The true genius of Abandoned Language is found in the production. Stunning in stereos and nearly mindblowing in headphones, producer Oktopus evokes the ghetto-as-ghost-town feel of Liquid Swords or Hell On Earth with tracks that are dense, but never cluttered." Dälek has a new record scheduled for release via Ipecac in January '09, Gutter Tactics. They'll be hitting up Dublin, London, and Prague in the meantime. Here's one from Abandoned Language: