Top Three biggest paying faucet:
1. Earn up to 100,000 satoshi per minute
http://get-coin.com/btcfaucet/index.php/?id=429
2. Up to 10,000 satoshi every hour
http://bitcoinspace.net/freebitcoins/?id=7466
3. Up to 5,551,712 satoshi every 21 minutes http://btc21.net/?id=1016555