FREE online TV episodes: Prison break - Audio/video stream recording forums

I've found free TV episodes of Prison break at hulu.com

Code:

http://www.hulu.com/prison-break

The problem is that those hulu ads are so annoying.
I can perfectly capture hulu videos with Replay Media Catcher, but sometimes I wanna watch free online TV episodes live without while the new TV episode is downloaded to my PC.

I've found the alternative. The Prison break TV episodes can be found at

Code:

http://www.cucirca.com/2007/05/06/watch-prison-break-online/

The quality is worse, but the main problem is that I'm not sure how legal is that to watch free TV episodes on cucirca.com . Do I risk anything?
I'm perfectly aware that this is a pirated TV episodes. Does it make any difference if I watch it on this web-site rather than watch the Prison break on Amazon Instant Video (which is definitely legal)?