Rate It: Best at-home teeth whitening

We've calved about Crest Whitestrips, introduced you to iWhite, pondered the merits of Pearl Drops Party Sparkle Toothpolish, and brought you news of blue-hued lip glosses like Benefit's California Kissin'. And hardly a day goes by without talk of veneers or braces or somesuch in the Blather, so it looks like a set of gorgeous gnashers is something we all crave.

What's the best DIY, not-too-'spensive solution you've found to make sure your smile has ne'er a touch of Shane McGowan about it?