Well, the best one is probably faucet from primedice.
+1.
I don't think you can find any faucet giving you 500 satoshi every 3 minutes (it used to be every minute) for just solving captcha.
You can't withdraw that though, you have to gamble it.
Faucetfm.com pays 400 satoshi every 10mins + you get entered into a weekly Jackpot.