One of the first OVA's ("original video animation") I ever bought, this still has to be one of my favourite anime titles. A cyberpunk sci-fi action comedy set against an unlikely (for a comedy, that is) background of near-future pollution in a dystopian society.
The "heroes" of Dominion are the Tank Police, formed with a "if we can't beat crime, we'll get bigger guns" philosophy, and who are, like the name suggests, patrolling the city in tanks instead of patrol cars, and who are actually far more dangerous than any criminals they are trying to catch. Most, if not all, of these cops are borderline(?) psychopaths and neurotics, giving new meaning to the phrase "loose cannons".
Equally colourful and amusing are their adversaries, terrorist Buaku and his hench(wo)men, the Twin Cat Sisters, whose existence always seems to involve giving the Tank Police a hard time.
The animation is not state of the art, but it's very nice otherwise; the colourful palette and cartoonish look of the characters and mecha fit nicely with the comedic atmosphere of Dominion.
The English dubbing is, again, lots of fun. The soundtrack of the English version is also very good. I wonder if they ever made a soundtrack album of that...
Anyway, Dominion Tank Police is great. It's Japanese cyberpunk SF with lots of comedy, filled with completely over-the-top characters and situations, making sure that it never takes itself seriously. Highly recommended.