How to show dot underscore ._ files? I want the OSX to show all kind of hidden files including ._ files too. I do not know exactly what I did, but I am successful in seeing .DS_STORE files, but not ._ files. Any idea how to achieve that?
Open up terminal, and write:

defaults write com.apple.finder AppleShowAllFiles YES


This makes you see dot files and hidden files in a grayish tint. You open . files with right click open. I do not know why you cannot just double click them though. If it is a problem, ask a separate question on that.



Just a little bonus:
You can hide files by issuing:

chflags hidden /path/to/file


and unhide by issuing:

chflags nohidden /path/to/file