I had my first go at restoring a file using Time Machine today. Looking for a Keynote presentation, I realised that I had kept only the PDF of the presentation and not the original presentation file. Not really sure how that happened, but, anyway, the file was lost.
I have had Time Machine running on my computer ever since I upgraded to X.5, and have been wondering whether it would be worth the extra CPU peaks that appear every hour or so when it activates and copies changed files. After this incident, and after luckily retrieving the deleted file, I have to agree that the solution is actually working very well! I could have done without the Star Wars-like effects and looks of the program, though…