My favorite as well, but for more than just musical reasons.
I tried to drive to the listening party with my girlfriend, all the way from Colorado Springs (about 14 hours driving). Though we left with plenty of time, we had some car troubles and missed a little more than half the album. When we arrived at the waterpark, exhausted, we followed the mysterious buzz of Uritual to locate the listening party. Then not long after we sat down, this came on. It was amazing. I was worried that arriving late would be like walking into the middle of the movie, but this song washed away all my worries about that sort of thing and I just listened.
The live stream today gave me context for the songs we heard, but Uritual transported me out of my room and right back to the Mojave desert, 800 miles away. I was waiting the whole time for this song, even though I didn't know it by name until today (I didn't attempt to figure out where in the album we were when we sat down). When it came on, it was just as I remembered.
I will never forget my first time hearing this song. It embodies everything I love about BoC.