How predictable.
Most of faggots here oohing and aahing over ragdolls.
Physics alone is irrelevant. It's what game can do with it that matters.
Some games simply require physics to realize their gameplay (I'm speaking of games like realistic simulators and of physics puzzles).
Some implement physics (sometimes good, sometimes horrible), but leave it unused in actual gameplay (oblivion, for example).
Some however implement physics way beyond what is required to facilitate their core gameplay, take Myth, for example.
Funny thing is that advancement of physics engine and actual role played by such extra physics seem pretty uncorrelated.
Two examples, same series, to not get distraceted by unrelated differences:
Oblivion has pretty extensive (if terribad) physics that plays no role whatsoever in gameplay.
Daggerfall, OTOH has very primitive (and buggy) physics, that nevertheless can be used in gameplay - explosions from fireballs can throw creatures off the ledges and into the pits, or slam them into walls for extra damage.