For a large portion of the past year, I've had a massive poi mad-on for technique like Ronan McLoughlin's. He's from Cork, Ireland and has one of the most original poi spinning styles I've ever seen. Unlike most poi spinners (myself included), Ronan centers his style around stopping the momentum of the poi rather than keeping it moving, resulting in a dizzying array of stalls, pendulums, and contact work that always leaves me scratching my head.
Santiagopoi just posted a vid of Ronan practicing and it's a fascinating look inside of how the man's mind works. Some of the tricks work and some don't, but it's truly rare you get a chance to see someone of this caliber working through ideas as they come such as this, so I give it a hearty recommendation. Check it out!