Boring for the moronic. Anyone with an ounce of brain would recognise the sheer brilliance of a film like Rear Window.
The killer's not exactly a monster though. There are worse killers out there. If you label Thorwald as a monster, then compared to a serial killer, he's a pretty tame one.
"He may look like an idiot and talk like an idiot but don't let that fool you. He really is an idiot."