Which program do you use for pixels?

[NICKtendo DS]

The standard sprite editor of Game Maker 8 is what I use nowadays.
Started when I made crappy graphics in GM5 for my crappy games.
GM8's sprite editor is far superior to that of GM7, because PNG and multiple undos. I struggle in GM7 now, because you can only correct one mistake at a time and the interface is confusing in comparison.