Top Ten
Top Ten is a generic term used to indicate the ten items that are best, worst, or otherwise notable according to some criteria. David Letterman uses Top Ten lists as a gag on The Late Show. While, by their nature, top ten lists should be counted down from 10 to 1, it is a common error to count the other way, even when parodying Letterman, who does get it right. If you count up, it's not a "top" ten list, it's merely a list of ten items.
Top 10 or Top-10 also refers to a variation on the Top 40 record chart, often presented on radio as a countdown.
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Examples:
Top 10 is a comic book series by Alan Moore, Gene Ha and Zander Cannon.