Kiyoshi Kurosawa is a director with depth. Here in the West he gained notoriety with two films (Kyua and Kairo) which happily hitched a ride on the Asian suspense wave (and to date there are still some people who primarily consider him a Japanese horror icon), but in reality Kurosawa's reach is a lot broader. He has worked in lots of genres, under wildly different circumstances and with a rich selection of prime Japanese actors at his disposal.
Even when he started out in the AV business (Kanda-gawa Inran Senso, Do-re-mi-fa-Musume no Chi Wa Sawagu) Kurosawa never really kept to the boundaries of the genre he was working in. The man likes to play around with genre tropes while fiddling with more complex and interesting themes right below the surface. It doesn't always result in great films, but it left him with a wildly interesting and varied body of films.
It's not easy recommending specific movies as it all depends on what you prefer. If you are into stilted dramas Oinaru Gen'ei is a good starting point, if you prefer the absurd eco-horror Karisuma is a saef bet. I personally like Kurosawa's Rofuto best when picking from his horror work, while Akarui Mirai is arguably his best drama. But he's an avid crime filmer too, with films like Kumu no Hitomi and the Katte ni Shiyagare!! series as prime examples. Whatever film you pick to start with though, don't give up too soon as there's a lot to discover in Kurosawa's oeuvre. Not everything will work for you, nor will everything be easy to find, but I assure it's worth the effort to dig deep in this man's work.
Best film: Kumo no Hitomi (Eyes of the Spider) (4.0*)
Worst film: Kanda-gawa Inran Senso (Curse, Death & Spirit) (1.0*)
Reviewed film(s): Kumo no Hitomi
Average rating: 2.81 (out of 5)