I brewed Saints Go Marching In RIS from Zymurgy. It was/is great and it's pretty simple. Loads of roasted barley, flaked barley, and base malt I think (maybe). I used 2 packs of rehydrated S-04 per 5/gallons so there was plenty of yeast without needing to fuss with an enormous starter (I made 10 gallons). It was nearly an entire bag of Marris Otter. Out of 20 kegs we brought to club night last year, it's the only one that kicked.