Until today, I only noticed two commemorations in the States: one in Maryland, which is celebrating the bicentennial of the bombardment of Fort McHenry and the composition of the national anthem; and the other in Alexandria, which is celebrating the landing and withdrawal of British troops.
However, this afternoon NPR came through. They did a segment on the burning of Washington, complete with a reporter embedded with the British forces, and analysis by E. J. Dionne and David Brooks. Still nothing like what the CBC's done to commemorate the war, but cute.
ETA: For some reason the CBC content isn't available outside Canada, but using the Hola proxy might work.