Lots of people have been making Ron Paul videos and some of them have been quite good. You can see a lot of them here. But, to me, one stands out above the rest. (it was on this page but, unfortunately, it's been removed from YouTube).
It's probably not the best "conversion" video, since it doesn't spend a lot of its time directly *stating* Ron Pauls policies and philosophies, it mainly makes implications (though it does have a number of quotes from him). What it does do is invoke a lot of emotion and energy --- from me, at any rate.
I imagine if you are a Ron Paul supporter, you'll love it. If you're not, check out some of the other videos at the link above.