Links:

Art of Assembly - "Art of Assembly" book.
OSDev - OS Development.
BonaFide - Another OS Deveopment web page.
Asm Journal - Asm Journal. No new issues...
Win32Asm - Win32 assembly page with Tutorials.
Porgrammers Heaven - Assembly Zone at Programmers Heaven.
Intel - Intel's documents.
Code BOX - Assembly's zone at CodeBOX
OSDev.LT - Lithuanian OS development webpage.
256b - 256 byte Assembly demos
X86 - Microprocessor Resources