Offers I have done that payed out in a timely fashion:
SuperSonicAds: Urban Thrill Facebook App > Easy to install, didn't give me any problems and paid out the Gaia cash in just a few short minutes. That's all I had to do. Now, I don't know if your cash will be revoked if you uninstall the app too soon but it's harmless and not doing anything I don't like so I'll leave it a while to make sure.
GWallet - All the video offers! Seriously, there's a bunch of them and though they only pay small increments of cash, they add up over time!
Peanut Labs: Did about 5 videos (not all in one day though) and they all paid out. Easy.
SponsorPay: Facebook Dislike App! It's an easy, non-intrusive 84 cash! Paid out instantly after install and it's safe to install as far as I can tell so far.
So far, that's about it. I've tried qualifying for surveys and I never seem to get anywhere, I did the FlipToast for Faceebook download from Peanut Labs and while FlipToast is a pretty cool application (and I'll probably keep it), I haven't gotten my cash at all yet. It's been hours. =s So we'll see!