!(/\.(?!htaccess)[^/]*|\.(tmproj|o|pyc)|/Icon\r|/svn-commit(\.[2-9])?\.tmp)$
!.*/(\.[^/]*|CVS|_darcs|_MTN|\{arch\}|blib|.*~\.nib|.*\.(framework|app|pbproj|pbxproj|xcode(proj)?|bundle))$
!(/\.(?!(htaccess|gitignore|gitmodules))[^/]*|\.(tmproj|o|pyc|log|cache)|/Icon\r|/svn-commit(\.[2-9])?\.tmp)$
!.*/(\.[^/]*|log[s]?|cache[s]?|CVS|_darcs|_MTN|\{arch\}|blib|.*~\.nib|.*\.(framework|app|pbproj|pbxproj|xcode(proj)?|bundle))$
For revealing hidden files in project drawer
!(/\.(?!.)[^/]*|\.(tmproj|o|pyc)|/Icon\r|/svn-commit(\.[2-9])?\.tmp)$
Gist 803541 - razic
Folder references: Gittier file pattern
!(/\.(?!(htaccess|git))[^/]*|\.(tmproj|o|pyc)|/Icon\r|/svn-commit(\.[2-9])?\.tmp)$
Gist 491327 - cboone
Show hidden files and hidden folders (except .git)
!(/\.(?!\W*)[^/]*|\.(gitkeep|DS_Store|tmproj|o|pyc)|/Icon\r|/svn-commit(\.[2-9])?\.tmp)$
!.*/(.git|CVS|_darcs|_MTN|\{arch\}|blib|.*~\.nib|.*\.(framework|app|pbproj|pbxproj|xcode(proj)?|bundle))$
Gist 728445 - chrisyour