These are list of all Facebook Fan pages of many Google sites and service. Well if you a fan of any of then you can then add it your Facebook account.

1. Google  : http://www.facebook.com/google
2. Life at Google : >http://www.facebook.com/lifeatgoogle
3. Google Students : >http://www.facebook.com/GoogleStudents
4. Google Chrome: >http://www.facebook.com/googlechrome
5. iGoogle: >http://www.facebook.com/igoogle
6. Google Maps: >http://www.facebook.com/GoogleMaps
7. Google Mobile: >http://www.facebook.com/GoogleMobile
8. Google News: >http://www.facebook.com/googlenews
9. Picnik: http://www.facebook.com/picnik
10. Aardvark: http://www.facebook.com/aardvark
11. Google Translate : Google Translate
12. Google TV : http://www.facebook.com/googletv
13. Google Voice: http://www.facebook.com/GoogleVoice
14. YouTube: http://www.facebook.com/youtube
15. Google Adwords: http://www.facebook.com/adwords
16. Google Adsense: http://www.facebook.com/GoogleAdSense

Hope this info is helpful to you. Do comment. 🙂