I realize there is a minimal version of YouTube search on the front page right now, but I thought I'd throw my fleshed out version of a video search tool in to the ring. My friend submitted this page to reddit a couple days ago and after getting 150+ upvotes in ~1 hr, it was shadow shadow banned by the mods before hitting the front page... I'm hoping you guys will get to see and enjoy.
The main purpose of the site is to build and share collections of videos. I built this tool to help with that. You can search and watch videos at the same time as well as save entire collections of videos from this page.
The idea is to make it easy to find relevant videos around broad subjects and niche interests by making it easy for people to curate videos around the things they care about.
I've built something a little bit more fleshed out, actually... How about a site that lets you search and watch videos at the same time. And also does Vimeo. And lets you save them to personal collections. Here you go.
http://huzzaz.com/search