Another iOS feature that Lion has adapted is the annoying implementation of spelling auto-correct throughout the entire OS. The intensity level is nothing like that found in iOS, granted (see damnyouautocorrect.com) but it’s still enough to irk me. (At this point I can’t imagine that surprises anyone).
You can either turn this off the boring way by going through System Preferences -> Language & Text -> Text and then untick the ‘Correct spelling automatically checkbox’.
OR fire up the Terminal and run the following:
defaults write NSGlobalDomain NSAutomaticSpellingCorrectionEnabled -bool NO
As usual to turn back on:
defaults write NSGlobalDomain NSAutomaticSpellingCorrectionEnabled -bool YES