I have the 2004 edition(112 games).  I believe there's a newer expanded version.  I'd like to know what the extra games are in the newest version.  mucho gracias in advance

Here you go, check the extra 13 games in this edition:

http://www.scribd.com/doc/49470589/The-Mammoth-Book-of-the-World-s-Greatest-Chess-Games-by-Graham-Burgess-Dr-John-Nunn-and-John-Emms

Only 112 games is considered massive?

Teary's Tartakower book has 500 annotated games...

Maybe it's the size of the book itself that is huge, like if it were 2 feet by 3 feet. 

For your perusal...

http://www.chessgames.com/perl/chesscollection?cid=1021407

You're Welcome :)

does anyone knows links to download pdf books 2011 publish glad to know

Speaking of books...

How to Reassess Your Chess 4th edition was named the chess book of the year by the Guardian UK