Favorites are personal, but nothing beats the hard reality of sales figures. IRI last week revealed its annual New Product Pacesetters, the best-selling new products of 2012. It’s always difficult to throw a ring around this group, to come up with just a trend or two to explain what always is a disparate collection of stars. But I see a lot of novelty in there – frozen cocktails in pouches, water-flavoring drops, self-inflating popcorn bowls, K-cups and – are you tired of it yet? – Greek yogurt.