I don't have a huge collection of imports. I have Duke Nukem Land of the Babes for PS1 PAL and Return to Castle Wolfenstein for PS2 PAL.
For Japanese imports, I have Final Fantasy I, II and III as well as Dragon Quest I, II, III and IV for the Famicom. For the Super Famicom, I have Final Fantasy IV, V, VI and USA as well as Chrono Trigger. Just picked up Dragon Quest I&II, III, V and VI as well.
Then I have the Final Fantasy Collection of IV, V and VI for the PlayStation. I also have Kingdom Hearts Chain of Memories import from Japan for the Game Boy Advance.
So....20 off the top of my head.
EDIT: Duh...forgot the Fallout 1, 2 and Tactics PC collection from the UK, infamous First Light for the PS4 UK version and Ratchet & Clank Quest for Booty Hong-Kong version for the PS3. Make that 23.