Most Rails developers know of PeepCode but I know only a few that have actually purchased a screencast from them. I'm really happy that they've reintroduced their year subscription. There's no excuse now - go and buy this! After watching two or three I can say it's already paid for itself.
Interestingly, I'm enjoying the pdf's just as much as the screencasts. Keep it up PeepCode!
If you're a cheapskate, start out over at RailsCasts - but if you like them, help Ryan out and buy some PeepCode material.