I put this on my tumblr, but gonna put it here too

Rurouni Kenshin/FMA crossover where-

Kenshin is Alphonse
Kaoru is Winry
Yahiko is Ed (Yahiko even does and "I'm not LITTLE!!" rant XD)
Sano is Greedling (closer to the end when he was having all his internal revelations)
Megumi is Rebecca
Saito is Roy
Aoshi is Scar
Misao is Mei
Okina is Fu
Shishio is Father
Kimblee as Soujiro Seta

feel free to add to this (and then someone write it)