DVD Buy:
Audition (But if you didn't take to Ichii you might find this not to your taste but this is an R1 DVD must)
Rashomon (The Criterion Collection is a must)
Ran (Wait for a Spec.Edition, which has been rumored)
Dark Water (bare-bones DVD plus it's made in HK so some of the subtitling is off but this is a satisfyingly spooky movie)
Korean Films:
Barking Dogs Never Bite (best Korean film I've seen. Wish there was a better DVD of it, though. Maybe you can pick up the Korean Edition. More expensive but possibly better)
Volcano High (If only so it's easy to go back to specific chapters. There's a lot of action scenes here you'd like to see again and VCDs are a bitch to navigate)
Three (The third and best episode is available in a seperate DVD. if you don't mind having a DVD that's 2/3 so-so crap, get the full-length one. If not, get this. Has extras)
VCD:
JSA: Joint Security Area (A far, far better film than Volcano but not open to repeat viewings. have a DVD of this but I've played it only once. My DVD of Volcano has been fed into the machine quite a lot of times, though)
Wasabi (or better yet, just borrow it from someone or . . .you know. . .)
Shiri (Have a VCD of this. Am OK with that. Don't feel the need to get DVD but the Spec-Ed. is gorgeous)
Haven't seen it but will get Sorum on DVD.