2006 Scripps National Spelling Bee (8 p.m., ABC): For the first time, the annual competition for those who don't mince words airs in prime time. It's hosted by Robin Roberts, who also hosted the first

2006 Scripps National Spelling Bee (8 p.m., ABC): For the first time, the annual competition for those who don't mince words airs in prime time. It's hosted by Robin Roberts, who also hosted the first televised bee on ESPN in 1994. The championship rounds will feature the country's top spellers, pupils who have survived local and regional contests. Preliminary rounds air starting at noon on ESPN.
"The Office" (8 p.m., NBC): If you still haven't jumped on "The Office" bandwagon, now's your chance. Four repeat episodes of the wonderfully offbeat workplace sitcom are airing back-to-back tonight. See what all the fuss is about.
"The Human Behavior" (10 p.m., Court TV): The documentary explores why we suddenly start acting nutty under extreme situations.
"Andre Rieu: The Flying Dutchman" (8 p.m., PBS): Andre Rieu and the Johann Strauss Orchestra perform waltzes, marches and melodies from around the world in this two-hour concert special, originally aired in June 2005.