Dan Christensen just might be Portland's most beloved bus driver. Hundreds of riders check in daily to his humorous TriMet Confidential blog. He has more than 18,000 Twitter followers. This week, Willamette Week named him one of the city's "Best People." So why has TriMet taken Christensen off the road? On Thursday, he posted a commentary on his blog with a picture of a man riding a bike and this headline: "Portland! Kill this bicyclist." When TriMet saw the post, it put Christensen on paid administrative and forwarded the case to the district attorney's office for investigation.