It had some trouble with earlier waterproof tests, but according to these videos the Nokia N97 was able to maintain a phone call through a chip shot and a rugby boot.
To be honest, we have seen other phones endure quite a bit more punishment—and we weren't impressed with the N97 overall anyway. Perhaps we would be more impressed if the N97 was teed up with a titanium driver. Then call up Tiger Woods for marketing gold. [Nokia Conversations via Electricpig]