In the world of pop culture, 2007 was the year we turned up our noses at Britney (while unleashing a world of schadenfreude on the tearful fan who defended her on YouTube), shook our heads over the Michael Vick dogfighting arrest and did a major double-take at the NASA astronaut love triangle. Meanwhile, France yawned over its First Couple's split; An Inconvenient Truth sparked an eco-friendly clothing trend; and the verb "to tase" entered the lexicon (as in, don't, bro). From the year's most notable quotes to its most sordid breakups, appalling awkward moments and unexpected slogans, here are 2007's most important pop culture happenings.