The Jurassic Park game from TellTale takes some liberties with Troodon - it paralyses prey, then opens them up and lays eggs in their innards. More info
here if you're interested. They tried to make them as creepy as possible.
Game aside, Troodon's defined by nocturnal adaptation, varied feeding behaviour and an exceptionally large brain. I've made various rants in the general dinosaur thread about the murky relationship between brain size and intelligence, but I'd imagine that if Jurassic Park tackled Troodon, they'd make it a super-smart ninjasaurus.
Anyway. I think Doom and BlackLabel are probably right about the new 'scary' dinosaur being Carnotaurus. It's one of the few major elements of Crichton's books that haven't yet been worked into the films, and it's something that fans have been very vocal about for years. And it has a lot of cinematic potential.