I've seen Coptic priests swing a full 360 degrees, where the thurible is actually upside down relative to the floor. The monks at St. Anthonys and younger priests in SoCal do it, whereas older priests do not...I suspect it's a local flourish first mastered by the local monks, and then passed on to the newly ordained (who IIRC are required in Coptic custom to spend 40 days in a monastery mastering the liturgy before being unleashed on a parish).
Also impressive in any thread about Thuribles are the open top Ambrosian Rite thuribles, which are moved in a clockwise rather than cruciform direction and emir prodigious amounts of smoke, and of course the titanic Botafumeiro of the Cathedral of Santiago de la Campostela in Extremadura, Spain, a historic pilgrimage destination due to the miraculously translated relics of St. James the Great (hence the Spanish war cry "For Spain and St. James!"), which is incredibly large, requiring a team of 20 to operate it. It burns so much coal and incense that each "performance" costs 500 Euros. In the 16th century it once broke loose from the ropes that suspend it and flew out through the Rose Window on the west side of the Cathedral; in the 1920s or 30s it crashed to the floor spilling coal and incense everywhere but again, no injuries.
Now I really think we need one of these in one of the larger Orthodox cathedrals. Only larger, and natural gas powered. I am all for a Thurible War with the Romans.