I thought it did sometimes, but it could just be my handset being random/changing orientation due to me knocking the keyboard when rotating it.
I want to see a game use the i2C sensor that provides the tilt sensing
On my desk: iMac 24", G5 dual Rev A 2.0GHz with X800 and dual 20" LCD, Dell XPS M2010 and about 80+ machines from 1979 to 2007.
Mobile: iPhone UK (hacked), FlipStart V1.0, HTC Athena/Universal, N73, Motorola International 3300, 620LX, Newton 110, iPod 80GB, Ubiquio 711.
Gaming: PS3, Wii, X360 Elite, Xbox (X3CE, XBMC), DreamCast, MultiMega, ColecoVision, NES, Hydra, GP2x
Photography: Sigma SD14.