There was one other new title that supposedly has uncompressed as well, though I highly doubt this is in-game. It is most likely during cut scenes, just like some of the other games that had dts actually only had it in cutscenes.
I just registered to chime in on this thread.
The PS3 is capable of decoding at most 7.1 of uncompressed PCM audio for games. NOT just in cut-scenes, during actual gameplay as well.
Virtually every Sony-produced PS3 game supports either 5.1 or 7.1 PCM audio, there are several other non-Sony games that support 5..1 PCM audio as well.
Uncharted 1 and 2, Resistance 1 and 2, SOCOM: Confontation, Siren, Genji, Infamous, Warhawk all support 5.1 or 7.1 uncompressed PCM audio to my knowledge.
Other titles like Sega's Virtua Fighter 5, Capcom's DMC4, EA's Mirror's Edge and I believe Dead Space ALSO support 5.1 uncompressed PCM audio.
Some games opt to support in-game, lossy DTS streaming at 1.5mbps as well for older receivers that only support optical audio (you must set it manually beforehand on the PS3 settings menu depending on the game).
Just wanted to clear that up.