Stair Dismount for the iPhone is a spiritual descendant of the Stair Dismount Porrasturvat game back in 2001/2002 where you try your hardest to launch a ragdoll as painfully as possible down a flight of stairs. It was brilliant.
The current iPhone version (not out yet, but supposedly will be by Thanksgiving) has a larger number of stairs and stair types, but seems to be a little slower in rendering the "falling" animation than its PC ancestor—probably because the emulator is running as well as the recording software. It still has the delicious crunching sound and wiggly ragdoll physics, which means we'll still be first in line to get this for our iPhones. [YouTube via TUAW]