Not that I can even imagine having enough time to do cross stich right now. (i'm in architecture school) Even a 100x100 pixel art would make a fairly large cross stich, more than 8" square on 12 point.
*looksatbeadsprites* I can see those would be much faster than cross stich work.
I like to use a little higher point size and then do it on an article of clothing using the pull apart mesh. It's more fun that way and more people see it than if it was hanging on my wall. ^..^