As far as I know both Crazi and Sonic were re-compiled/ported to ran on the PS3 hardware.
Can't tell about the rest as they were only anounced for the PSN Store.
And yes I'm Portuguese.
Crazy Taxi: PC port
-16:9 support
-new musics (some of the original ones couldn't be included due to license issues)
-leaderboards
-avatar items
-Achievement and Trophy integration
-5.1 sound
Sonic Ad: ?? port
-4:3 (only)
-pretty much the same as above