Almost Human is essential! Lenzi and Millian at there barmy best, and while your at it, The Cynic, The Rat and the Fist aint half bad either, starring the omnipotent genre icons Merli.
When it comes to eurocrime, one director rains supreme however, Fernando Di Leo. He directed some of the snazziest, classy and intriguing mob movies ever, his opus being Milano Caliber 9, a movie that can go toe to toe with Goodfellas, but then he also directed some glorious trash like The Boss, which is glorious in it's own way.
Dellamano concluded his trilogy after WHTDTYD? And WHTDTS? with an out and out cop thriller, Colt 38 Action Squad. It's a fairly gritty fair, but one of the beat of the genre. In stark contrast is the barmy Di Keo scripted (and candidate for the best title to a movie ever) Live Like a Cop...Die Like a Man! from Rogero Deodato. It opens with an unlicensed motorcycle chase that saw the director taken to court and concludes with a miniature sea yot exploding on a freeze frame. It's awesome!