Since we're barrelling full steam into apple pie / spiced things season, I thought I'd mention that my favorite cinnamon is the extra fancy vietnamese cassia from Penzey's (link is here).
I hear you thinking "but Richard, aren't all cinnamons alike?" To which I answer "Dude, you have no idea - this stuff is killer." Because it's so strong, they actually recommend you cut back versus what you'd usually use - but I say heck with that. Cinnamon blowout!
There's a small Penzey's outlet in Grand Central Terminal, for those in the NYC area.
From a hotel room in Moscow,