Let's face it — the best and most powerful teams in the NBA don't really change from week to week. A handful of results in the middle of winter can only mean so much to a franchise's championship hopes. What does shift regularly, though, is how much interest a squad can hold over the course of a season. Every week, BDL's Most Interesting Power Rankings track the teams most worthy of your attention. THE TOP 15 1. Golden State Warriors (69-8; last week : 1): It's admittedly a little insane to suggest a team operating at this level might be struggling. And yet, watching the Warriors work last week — through the dominate-only-in-fits-and-starts win over the Washington Wizards, through the overtime white-knuckler over the Utah Jazz and, most notably, through the home loss to the Boston Celtics, snapping an record-setting 54-game regular-season unbeaten streak by the Bay — they did look a little run-down , a bit ragged. Head coach Steve Kerr saw it, too, suggesting after the Boston loss that "maybe all the talk and all the focus on the record" — on trying to become the first NBA team ever to go a undefeated at home during a single season and, more broadly, on...