i am currently reading the dawn of war tie-in

i have..and plenty of the dan abnett

just awsome

ps: if you go to games workshop's web site  the Inquisitor RPG adventure miniture wargame rules of INQUISITOR is free, it under the specialists game resources>inquisitor resources

there is 6 pdf core book's 1 errata..but there is many other Inquisitor sources material.

yes you can even make a space marine character!..they are tough!

here is a example of a 54mm character figure

example:

tyrus-wych hunter Inquisitor purtian faction

here is a Adeptus mechanicus Tech priest character with his servitor

and a Death watch space marine...a whole lot of kick @ss

for some other charater model's some have done you can check out some of these link's and it's Inquisitor game resources

http://www.pbase.com/migsula/inquisitor_gallery

http://www.the-conclave.co.uk/index.html

an more free rpg warhammer inquisitor resources by none other than games workshop staff!

http://www.darkmagenta.co.uk/

sample inquisitor Game resources..more machine than man!

More Machine Now Than Man.pdf

He's More Machine Now Than Man

I've read most of the Gaunts Ghosts novels and must say they are really good. You get a good view of how bleak things are for a normal grunt in the 40k universe.

Those are my favorites along with the Horus Heresy series.  Sadly I haven't kept up to date on either since I don't visit bookstores enough lately. 

My absolute favorite 40k book is the Gaunts Ghosts novel where each chapter focuses on one of the ghosts and their best exploits. 

Not read the Horus Heresy ones yet but they are definately next on my list.

i read the Fire Warrior novel.