If stainless AND not dented (or heavily scratched somehow) Never Dull or Blue Magic Metal Polish Cream (Blue Magic better IMO). Some elbow grease with the Blue Magic will yield the same results as shown in the video link and for headlight trim and narrow moldings I find it to be as fast as mechanical polishing (approx 1 1/2 hours to polish out all four dog dish caps on my daughters '65 Rambler BUT does take more work). For chrome I'd stick with something that specifically states it is for chrome plating (Blue Magic is but I've only used on stainless).
