If you didn't already have reason enough to avoid Keith Olbermann's left-wing screeching on Countdown, here's another one: Tonight (Wednesday), for the first time, he will devote his entire MSNBC hour, sans relief for commercials, to a “Special Comment” -- the kind of high-handed pontificating, laced with mean-spirited and cheap insults toward conservatives, so far confined to the last 8 to 11 minutes of the 8 PM EDT/5 PM PDT program re-run at 10 PM EDT/7 PM PDT.“Special Comment Hour” topic: “Health Care Reform: The Fight Against Death.”