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We review the recent data on the knot HST-1 in the M87 jet in the context oftypical blazar behavior. In particular we discuss the wide-band flare of 2005which peaked at a factor of 50 to 80 times the intensity observed in 2000; thesuperluminal radio features; and the arguments that support the hypothesis thatHST-1 was the source of the excess TeV emission found by H.E.S.S. in 2005. Tothe extent that M87 can be classified as a blazar, perhaps observed at asomewhat larger angle to the line of sight compared to most blazars, all ofthese blazar properties originate at a distance greater than 100 pc from thenucleus, and thus cannot be associated with the location of the 'launching ofthe jet'.

The Continuing Saga of the Explosive Event(s) in the M87 Jet: Is M87 a Blazar?