Or near the end, or whatever.
What, and why?

MY NOMINATIONS(!):

The Mars Volta - Cygnus Vismund Cygnus
Because he has an orgasmic wail just before the final chorus kicks in.

Million Dead - To Whom It May Concern
Because it has a choir singing "I'm only working here cuz I need the fucking money"

Oceansize - Everyone Into Position/One Out Of nONE
Because it's LOUD.

yourcodenameis:milo - I Am Connecting Flight
Because it's probably the best two chord riff ever. (I think it's two chords?)

Refused - Worms of the Senses/Faculties of the Skull
Just after he stops singing "lets take the first bus out of here". Because, wow.

I realise these are pretty much all loud ones, anyone going to add some variety? :P