Haven't tried one myself but I think puffin web browser is meant to work and there are a few others like skyfire. Truthfully though I wouldn't expect very much from them.
Presume he wants one for iOS as Safari doesnt display flash, i know theres meant to be some out there By the way the post from mass521 is a dodgy 'spam' type message (if you quote it you'll see a weird link) so i've reported it.
How do you get this to work I can't find one video to work, is this a scam I tried all kinds of sights.
I have Skyfire and it works pretty well. If you send me the link to a video, I can try it out to see if it works.
If you have a computer at home with a decent connection, you can use that as your server for websites with flash, and use Splashtop remote to view the pages on your iDevice. Splashtop supports audio, so you can watch Hulu and such without the typical problems a lot of these Flash Browsers have - "Hulu is not available in your region." I've run into a number of problems like this, where the host server streaming the flash content is outside of the US and the content I want to access is blocked even though I am in the US. If you find yourself in a similar situation, I would recommend going the Splashtop route.