Analog\'s the way to go folks, especially for GT and NHL. For a lot of games I use a combination of both, playing the games in analog and navigating the menus with the D-Pad. There are some games that don\'t work with the analog stick well, like all of the Tomb Raider games... Lara\'s a pain to control regardless though.
Pretty much it depends on the analog support of the game, there are some games where it\'s beneficial to use the stick only SOME of the time like RE games or MGS and Syphon Filter (especially for the first person views and lining up head-shots). Other games are just pleasant to use the analog support on like Spyro and the newer FF games, because of the sheer amount of walking around you do, using the stick is easier on your hand in the long run.