http://www.chessgames.com/perl/chessgame?gid=1060586
http://www.chessgames.com/perl/chessgame?gid=1067139
http://www.chessgames.com/perl/chessgame?gid=1067160
http://www.chessgames.com/perl/chessgame?gid=1102104
http://www.chessgames.com/perl/chessgame?gid=1032639
http://www.chessgames.com/perl/chessgame?gid=1044100
http://www.chessgames.com/perl/chessgame?gid=1067846
http://www.chessgames.com/perl/chessgame?gid=1311652
http://www.chessgames.com/perl/chessgame?gid=1462082
Which game(s) have you repeatedly, almost obsessively, played over and studied?
An early favorite was Fischer-Larsen Potoroz 1958. I later studied Schneider-Kasparov Lyon 1994, in which Schneider completely outplayed Kasparov.