KBS has been posting subtitled episodes of this series on YouTube. They posted the first few when KBS World's TV airing had reached Episode 40. But they're posting them so quickly now that they've gotten ahead of TV. Today, for instance, Episode 59 is being aired on TV, but YouTube is already loaded through Episode 65.
Anybody who's tempted to go on YouTube and watch episodes...DO NOT--DO NOT--DO NOT--post anything here about any episode beyond the one airing on TV. I'll update the thread title every weekday so everyone knows exactly which episode is the latest one aired.
The YouTube option is great for catching up on missed episodes and I highly recommend it. Just beware; no spoilers here. (In fact, don't watch ahead, how's that.)