i dont play homebrew games... unless you consider pocket physics a game..but i ended up deleting that anyways.. i just stick to emus for homebrew gaming. I have tried the doom and quake ports.. they both work well, i suggest people to take a look at it, expecially quake.. yea the graphics are dated, but its quake.
for apps: moonshell, ds organize, colors, comicbook ds and beup