Android Contact’s Birthdays In Your Calendar

Go to the Google Calendar web interface on your computer (google.com/calendar).
1) Click the settings button in the upper right
2) Click the “Calendars” settings tab
3) In the Other Calendars section click “Browse Interesting Calendars”
4) Click the More tab here
5)  You should see an item labeled “Contacts’ birthdays and events”, click the Subscribe link. (While you’re in here, you might want to poke around.  There may be some other calendars you’re interested in adding in to your own as well, such as holidays and stuff!)

That’s it!  In a couple minutes, all your contact birthdays will show up on the Calendar in your phone.  How cool is that?