Laser-induced rotation and cooling of a trapped microgyroscope in vacuum. Yoshihiko Arita, Michael Mazilu & Kishan Dholakia. Nature Communications. Vol. 4, No. 2374 (28 August 2013). The largest measured rotational speed for a "man made" object — 10 MHz. This article is under a Creative Commons license, so you can read it for free.
Speed of Rotation. Sixty Symbols. YouTube (2009). We take a Segway out for a spin in this film about speed of rotation, also known as angular velocity.