A top 5 list most of us won't care about, but the descriptions, especially for a "top" list are hilarious. Here's a sample: With a "good color" and a "mild, watery, college taste," Natural Light was "perfectly acceptably flavorless" to our panel. http://xfinity.comcast.net/slideshow/news-lightbeertest/?cid=hero_media Cheers! EDIT: Here's the full article.
If by light you mean low gravity then there are hundreds of examples here. Some are admittedly nondescript, others leave you wondering how the brewer could possibly wring so much taste from such a beer.
