GameInformer noted that the following games all use the SIXAXIS motion sensitivity features to one degree or another:
Resistance: Fall of Man
NBA 07
Genji: Days of the Blade
Blazing Angels Squadrons of WWII
Call of Duty 3
Fight Night Round 3
Madden NFL 07
Marvel: Ultimate Alliance
It has also come to light that Virtua Tennis for the PS3 will use motion sensitivity [...]
"PS3 SIXAXIS Games" - 03.11.06