Among the thrilling matches of human prowess coming soon to our city: the Scripps National Spelling Bee and the US Air Guitar Championships. The Spelling Bee got started today, with the Round One Test, in which all 293 spellers spell 50 words on computers. The onstage action stats tomorrow. The Air Guitar Championship arrives on the 29th, at the 9:30 Club. Too bad the dates don’t overlap. Wouldn’t it be great if the competitors spent one day switching competitions? Shirtless, stoned, wannabe rockers mangling guerdon or appoggiatura and nerdy little kids rocking out all nervous?