Back in Apr-2006, I'd posted my take on Google Vs Yahoo calendar.
FWIW, I still use Yahoo calendar for all my personal reminders. Infact, I've extended the usability by
* importing the events into my Nokia 6233 phone (albeit not as frequently updated as I wish it'd be),
* using yahoo calendar widget to view the events on my desktop (it's really cool and easy)
Anyway, coming back to why this post now, I recently read a Wired review on few online calendars - The Web's Best Calendars. I found Scrybe listed amongst them to have ultra-kewl capabilities. The demo video just makes you drool :) Enlisted myself for the beta, waiting in the queue now !