In reply to itsThere:
I've got a Pentax K5 which has been pretty soggy without any problems. This video shows one being given a harsher test than I've ever dared. Remember the lens also has to be weather sealed to have any chance of getting away with this.
On Pentax in general. I love mine, it's well built and I find it intuitive to use. The viewfinders are great, and modern bodies are compatible with all historical lenses, and they have made some crackers over the years. They also tend to be a little smaller and lighter than competitors at the same price. In general I feel you get more camera for your money than you do from other brands.
Downsides are that there isn't a massive user base, so you're less likely to be able to borrow lenses from your mates, their autofocus speed is (apparently) poor compared to Canon/Nikon and you'll be called a fanboy if you praise them on internet forums (although hopefully not here).