Beating Metroid Other M took me about 9 hours and a half. Getting all items and the secret ending took me about two more hours.

I enjoyed it, but I'd recommend a rental, at that length. And unlike other Metroid games, I won't feel bad about cashing it in for credit at Gamestop.

So yeah, Other M, very fun ride, but needs a bit more meat around the bones. Left me hungry for more, not in a good way :(