Rare Minerals Blemish Control from Bare Escentuals
The Blemish Control product from Bare Minerals is not a "concealer" per se - it does cover quite well, but the really great part about this product is that it helps to get rid of blemishes - and keep them from coming back!
It's coverage is better than anything else out there too. :)
What's better than that? Buying it for discount prices, of course!