MAC can annoy me no end with the constant whirl of limited edition collections, but they do have some great products hidden in the core range. This eye pencil is one of them. Buried Treasure is a black/brown with subtle gold shimmer - it's softer than a straight black but a little more interesting and brightening than a plain brown eyeliner. The Powerpoint formula does wear better than most pencil eyeliner formulas but if you want to smudge it you need to work quickly; after a minute or two it sets and won't move without eye makeup remover.
Close up of colour:
The formula reminds me of the GOSH Velvet Touch pencils, although there isn't a very similar colour in that range (the closest is Golden Moss, which is lighter and greener than Buried Treasure).