I was in the Foxwoods Poker Classic (yeah, took a shot at the big time). I'm dealt JJ and after a pre-flop raise the flop comes out J97 rainbow. I bet about 2/3 pot, and my opponent snap shoves. To call him would have been about 3/4 of my stack which would have crippled me. I pondered it for about 5 minutes, then said I can't believe I'm gonna lay this down and showed the set of Jacks. The other guy flipped out and said "How can you lay that down". I said it's simple, I believe you have the straight. He replied "I do have the straight". The very next hand I drew a set of 4's and busted his QQ to KO him from the tourney and get all my chips back, and more. So you see, the right laydown can work.