I know that not everybody is such a dinosaur enthusiast as i am, but anyways, check out this link below:
http://www.cnn.com/2005/TECH/science/05/04/dinosaur.diet.ap/index.html
I personally find the Therizinosaurs (btw, the name means "scythe/reaper lizard") one of the most interesting and (for long time) most enigmatic group of dinosaurs. Imagine that Therizinosaurus itself probably was of about the same size as a Tyrannosaur, but it had claws that were 70cm long!