Get ready for the final battle in our hand - we're facing a difficult decision on the river.

We decided to play our hand passively and check/call on the flop. On the turn, our opponent surprised us by checking behind so that we now find ourselves on the river. The good news is: we still have a straight. The bad news is: we don't have the nuts anymore. Now we bet and our opponent moves all-in...
Question of the day: call or fold?
On the flop you couldn't really do anything wrong. But two streets later you have the choice between the devil and the deep blue sea.
Are you showing your muscles like Blanka and call?
What argues for a call is the fact that your opponent could play a single Jack like that. Additionally, he could bluff worthless hands like 76s or Q9s that are also still in his range. Unfortunately, you don't have the read that your opponent is a degenerate maniac, so here are our arguments for...

or are you level-headed like E. Honda?
...folding the hand. How often will your opponent really show a bluff in this hand? If he wanted to bluff, why didn't he do it on the turn and fire a bullet on your fragile house of cards? Would he really raise a Jack all-in? How likely is it that the opponent slowplayed the turn with AJ, KK or AA?

Now it is your turn to decide: close your eyes and call? Take a deep breath and hero-fold? Vote now and let us know your thoughts by replying in this thread.
