As fans of Super Mario Galaxy, we really enjoyed this SNES-make of the game from Techeblog -- so much so, that we wish this hack was actually playable. As a bonus, the video uses a great remixed version of the power-up music from Mario 64 (and beyond).
We're enjoying this trend of making Mario games retro (or, in the case of Super Mario Bros., more retro), and hopefully this won't be the last of these hacks.
See also: