NBC announced three freshman unscripted series will return for the 2010-11 schedule. Jerry Seinfeld's Marriage Ref, the Guy Fieri hosted game show Minute to Win It and the celebrity genealogy program Who Do You Think You Are? have all been rewarded with a second season. The Marriage Ref has proven to be the most popular of the new series, averaging 7.2 million viewers on Thursday nights.

http://www.tvguidemagazine.com/news/nbc-renews-three-unscripted-shows-4590.html

That's great, I accually am enjoying all three of these shows. I'm glad they are coming back and are renewed for new seasons.

I've seen Minute to Win It. it's basically a high-tech big money version of Beat the Clock, but I enjoy it. I haven't really seen the other two shows to comment.