Isn't Doug Polk still streaming his bankroll challenge?

pokerwithriske is good.

NickHowardPoker - Twitch

Not geared towards any particular limit, but to those with an urge to improve. The poker language there might sound a little abstract to begin with (various terms like "data points" and "incentivised" are used a lot), but you'll catch on quickly. It's relevant and accessible to anyone with an open mind. Streams are interactive and you can hang out and ask questions while it's running.

Streams announced in Nick's blog thread.

thx guys i will take a look at the suggestions :D