I'm a long-time Pentax user and at the risk of offending fanboys, if video capabilities are important to you, then I wouldn't get a K5. It's excellent for photography but not a well-rounded machine for both. If you want strong assets in both video-photog get the Panasonic GH-2 or Sony A55 (or any of their forth-coming DSLRs). If you want a Pro body for <$2k get a Canon 7D. And for >$2k, the Canon 5DMK2 will gain you access to a world of video resources.
That's not to say Pentax can't provide a more useful video platform. In fact, so much could be accomplished merely in firmware. But my personal feeling is that Pentax doesn't have the commitment or resources (regardless of the sheer magnitude of Hoya) to respond to feature requests in this domain with the speed of their competitors.
Originally posted by shuie none taken, and I realize I was drifting OT. I don't have a K-5 (still shoot a k-10), but would like to get one and video is an important feature for me. I hope some of the issues are resolved before I get one. I am not concerned with the audio issues, more concerned with the lack of manual controls. I have fooled with video on a KX with somewhat mixed results. I'm sure it just takes more practice.