Full notifications list:
• iCal Event "Now": Upcoming iCal event within 2-20 minutes (can be set)
• iCal Event in 30 minutes
• iCal Event in 60 minutes
• iCal all-day event tomorrow
• iCal To-Do (tomorrow and today after 06:00)
• iCal birthday (1 day, 3 days, 1 week)
• Address Book birthday & event (1 day, 3 day, 1 week)
• iTunes track change
• Hourly RSS headlines
• Instant RSS headlines
• Yahoo Upcoming powered local events.
• Pollstar and Last.fm concert notifications (local concert listings)
• Yahoo Weather up to 3 times per hour
• Yahoo 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
• Plugin architecture (see “OmniGrowl Advanced Info”)