With Mountain Lion, these features are built in, so your notes and reminders are automatically available on any Apple device. Sure, Microsoft has a more advanced note-taking product in OneNote, but a more simple--and free--solution as part of Windows 8 would be helpful.
Easier Voice Dictation
In Windows 8, voice dictation is available as an accessibility feature, and as such, it's buried behind several menus and not intended for general use.
Mountain Lion makes voice dictation easy to use from any application--you just press the Function key twice, and start talking.