Gojira

That's "Godzilla" to all us non-Japanese.
<a target="_blank" href="http://www.msnbc.msn.com/id/9993914/">Scientists have found the remains of what seems to be a Godzilla-like creature</a>. Basically, this sucker is a cross between T. Rex and an ancient crocodile that lived in the sea. Not content to eat fish, like most crocodillians of his age, this bad-boy ate other dinos. He didn't just fish, but he <em>hunted</em>. No radioactive fire-breath, but, otherwise, pretty much like Godzilla.
Now, freeze that and mix in a little radioactive waste and.... Suddenly, that movie doesn't seem quite so bad!