There's a launch party for a new skate exhibit tonight in Silver Lake. / Photo by C-Monster via LAist's flickr pool. KAYAKING + LA River: Supporters are welcome to watch a group of fearless kayakers navigate the LA River – from the Valley to Long Beach. At 3 pm today, there’s a kick-off ceremony/"launch" at the LA River Headwaters on the overpass @ Owensmouth in Canoga Park. The kayakers will demonstrate to developers and......

Hell, this may be illegal, but if the LA River plan is going to crawl upstream at a snail's pace, screw it -- the time to play is now! Not when we're 75 years of age. We caught this father/son urban adventure duo in Sherman Oaks paddling downstream towards Studio City. "Is this a tradition?" we screamed down. "Nope, it's our first time," the dad yelled back. We asked how he came up with......