I double checked on Nvidia website about Physx hardware accelerated game and it seems I was right the first time... *Only* 17 games total, most of which are total crap.

Batman: Arkham Asylum
Crazy Machines II
Cryostasis
Dark Void
Darkest of Days
Tom Clancy's Ghost Recon Advanced Warfighter 2 (GRAW2)
Metal Knight Zero Online (MKZ)
Mirror's Edge
Nurien
PT Boats: Knights of the Sea
Sacred 2
Star Tales
Unreal Tournament 3
Unreal Tournament 3: Extreme Physics Mod
U-WARS
Warmonger: Operation Downtown

Sources: http://www.nzone.com/object/nzone_physxgames_home.html

Anyone still think Physx is a valid argument to mention when talking about Nvidia?