NEW YORK - Today's horror movies are more likely to be dripping with blood than irony, with films like "Wolf Creek," the "Saw" series and this week's "Hostel" representing a return to their grisly, low-budget '70s roots. While the "Scream" trilogy grossed hundreds of millions of dollars in the late 1990s with characters who winked at the camera in playful mockery of the genre's conventions, horror flicks like "Hostel," Eli Roth's follow-up to his gory 2003 debut "Cabin Fever," will show you a character whose eye is dangling from its socket after a long afternoon of torture. Joe Dante's contribution,...