Full notifications list:
• iCal Event "Now": Upcoming event within 2-20 minutes (can be set)
• iCal Event in 30 minutes
• iCal Event in 60 minutes
• iCal all-day event tomorrow and today
• iCal To-Do (tomorrow and today and daily up to 60 days)
• iCal birthday (today, 1 day, 3 days, 1 week)
• Address Book birthday & event (today, 1 day, 3 day, 1 week)
• iTunes track change
• Hourly RSS headlines
• Instant RSS headlines
• Yahoo Upcoming powered local events.
• Pollstar & bandsintown & last.fm concert notifications (local concert listings)
• Yahoo Weather up to 3 times per hour
• MapQuest Traffic twice daily
• Flight Stats
• Woot (daily)
• MacZot (daily)
• Oxford English Dictionary (OED) Word of the Day
• 4info searches for sports scores, stocks, horoscopes, etc.
• All Music Guide (AMG) Biographies for artists playing in iTunes
• CityTools Ambient News: quick bursts of current news keywords
• Customizable log monitoring
• Hacker attempt notification (reading secure.log)
• S.M.A.R.T. Status failure report for startup disk
• Power status change (battery or AC)
• Network status change (ethernet or airport or neither)
• Random Oblique Strategies by Brian Eno
• OmniGrowl welcome message
• OmniGrowl quit message
• WBC holiday greetings
• Plugin architecture (see “OmniGrowl Advanced Info”)
Please note that WBC has decided to keep the old Growl notification names for consistency and the convenience of our existing users, despite the application name changes in Mountain Lion from iCal and Address Book to Calendar and Contacts. We may revisit this at a later date.