My method I would imagine is similar to many others...I'll write it out but it will sound a lot more complicated than it really is...maybe I'll waste a dead roll of XP2 (not super) to demonstrate a video or something today...
anyway: I slit the sealing tape with a razor blade, very carefully, for all rolls I'm about to process. It will not unfurl, and makes it easier to handle in the dark. Then I turn off the lights, and hold the roll in my left hand, with the plastic ends of the spool on my thumb and middle or index finger, with the slit tape facing roughly 45 degrees down towards the floor facing right. Then with my right hand, I peel away the backing paper until I find the end of the film, roll a bit of it out so that it naturally starts to curl into a tube, and then I mirror the way I held the spool with the film, thumb and forefinger. I pull the film out of the backing paper, letting it roll on itself until I get to the tape, at which point I peel the tape off the paper, and fold it around to the other side of the film. This gives the reel something a little more substantial to hold onto, especially with thin films. Now I feed the folded-tape end of the film into the reel, and begin loading, letting the film unroll as I load. I use Jobo reels and Paterson reels, the ones with the small feeder teeth, not the big plastic tongues sticking out.
All in all I can load a roll in under a minute this way, easily. My friends at school were always amazed when I would walk into the loading room at the same time they did, and re-emerge at the same time, or before, they finished, even though they were only loading one or two rolls, and I may have loaded 5+ rolls