The definition of "rice" has been pretty well covered here so I am going to stay away from that.
As for "JDM" I think a lot of people are sick of it because it is so damn common where they are from...especially out on the West Coast. However here on the East Coast JDM parts are extremely rare and almost non-existent. One thing I like about buying OEM JDM ITR parts for my car is that nobody I know has them.
I like modding cars, but I also like the clean OEM look as well. It is nice to know that my car is different from everyone elses that is lowered with rims and a body kit, and when we have meets here in CT I have parts on my car that noone else has.