After last year’s stunningly strong season, The Good Wife was in danger of falling into a slump. No such bad luck. This season has been another absolute delight, serving up one entertaining and unexpected conflict after another. And tonight, here comes another one: Alicia (Julianna Margulies) heads into court and finds an unexpected adversary as the opposing counsel: the quirky but very effective Elsbeth (played by Carrie Preston). Now that Preston’s run on HBO’s True Blood is over, maybe The Good Wife can find even more for her to do.