Google Calendar sync!!

Here is a link for setting up google calendar sync

http://www.bagofspanners.com/2009/06/17/subscribing-to-google-calendars-via-caldav-in-iphone-os-3-0/

So now you can sync Exchange as well as google calendar without using iCal or something to sync Exchange with it.

If you’re too lazy to click on the link. Here is a copy & paste
Subscribing to your own Google Calendar
This is the easy option – just follow the steps below on your iPhone…

1. Go to Settings
2. Go to Accounts (Mail, etc)
3. Add Account
4. Scroll to bottom and select “Other”
5. Select “CalDAV”
6. Enter http://www.google.com for the server name
7. Enter your gmail address as the username
8. Enter your gmail password as the password
9. That’s it!