Beautiful shot! I really love the reflection on the water too. And thanks for suggesting long exposure as the theme this week! I've never played around with long exposure, and I appreciate the inspiration!
I submitted some waterfall shots here: http://st33m.it/waterfall :)
Thanks! I've had a lot of experience with long exposure and thought it would be fun for everyone to give it a try. I'm glad that these challenges are motivating me (and others) to go out and take photos. I was kind of slacking for awhile.