vTap (beta) for the iPhone allows you to quickly and easily discover and watch all the video the web has to offer on your iPhone or iPod touch. Searching works as you type so you’ll find relevant videos quickly. vTap is quick, easy and requires just a few finger taps to track down the exact video or information you’re looking for.

There is also a Wikipedia search feature which also does inline search for terms on Wikipedia and shows the results in a friendly iPhone format. Must be using iPhone.

Try it here