Look who makes '24' tick Chloe O'Brian, everyone's favorite cybercurmudgeon, has added acerbic comic relief to the adrenaline-fueled TV thriller By HEATHER SVOKOS STAR-TELEGRAM STAFF WRITER We will sit, by the millions, white-knuckling our remotes and wondering how Jack Bauer will save us from World War III. On the brink of tomorrow night's season finale, we can say it with confidence: Fans have finally been given a season of 24 that has lived up to the potential of its premise. Seasons one and two of the hit Fox series started strong but devolved into a sometimes boring morass of seen-it-coming...