Apple’s Siri ad featuring Santa using the voice technology on his iPhone 4S was 2011′s most effective holiday advertisement according to viewer reaction as measured by Ace Metrix, a TV ad analysis firm — as reported by “GigaOm” (

Ace Metrix scores ads based on perceived effectiveness by a selection of randomly selected viewers. Apple’s Santa/Siri ad scored a 652 overall out of a total possible 950 points, which is based on respondent scores on criteria such as relevance, persuasion, watchability, information, etc. Apple’s 652 was 8% higher than the average score for ads in the same tech-oriented category.