PlayStation 3 games are not region locked, therefore any PlayStation 3 game will play on any PS3. Blu-ray movies however, are region locked, though a small few are not. A quick search will show which are and are not. Finally you can't be sure if a game imported from Another Country will support your spoken language unless you ask the retailer.
As long as it uses the PSN , YES
It MIGHT, or might not. PS3 games are not region-encoded so US games do work on UK consoles. For the sake of your PS3 thought, try and find a save file which has the description of "PAL" or "EU" - just in case your PS3 dies or something.
yes
It depends, i was unable to play a Japanese game on my UK PS3, you may be lucky enough to be able to
I dont know if you could DOWNLOAD US ps3 games to a japanese ps3, but you CAN play US ps3 disk games on a japanese ps3.
no they will have region problems
CoD: Black Ops topped the sales charts for XBox360 and PS3 in November 2010 in the US and UK.
no because UK runs on a diffrent voltage system
Yes.once its a ps3 game it can wark
'The Last of Us' is a ps3 exclusive game.
yes it can work
If you mean Re: Chain of Memories, but probably yes. If it is just Chain of Memories, then no, because it is a GBA game.