Good games to study

In your opinion, what games are good for about 1500 raking player to study? Games like from Kasparov, Fischer, Anand, etc..?

im about the same , and i enjoy annotated games......check out CJ  Purdy's collections

For game books, I really liked Schiller's "Learn from Bobby Fischer's Greatest Games". I've read that many people take issue with the historical accuracy and possibly some of the nuances of his analysis. But I found that it went into detail and explained enough of the reasoning behind the moves that it actually made sense to me, as opposed to the more mainstream chess books (targeted toward players who actually understand the game :-) in which a hint or a quick phrase is all that's given for a move or a line.

Sometimes older games where people don't play so perfectly are more helpful.  In any case Neil McDonald has several books with modern games where he explains everything really well.  Chess The Art of Logical Thinking esp has awesome games.  I loved the first game where Karpov demolishes Korchnoi in the open ruy.  But the games are by all the modern greats Kasparov, Anand, Kramnik etc.  He really picked good games for that book.