PREY - 4x16 - 4/5
As a species, the Hirogen seem a little dumb, but that is outweighed by the fact they seem to be able to ruin everyone's shit with ease. Bringing Voyager, the Hirogen and Species 8472 together makes for a one awesome episode. Janeway and Seven's continual disagreements come to a head again. This is probably my favourite aspect of season 4 (so I'll be sad to see it gone when it inevitably mellows later on).