The Colombian's movement appeared restricted, but Federer continued to make uncharacteristic errors.

BBC: Wimbledon 2010: Roger Federer survives massive scare

One curiosity was that, statistically, the speed of movement of the right knee also appeared to be important in signalling dance quality.

ECONOMIST: Dancing and sexual selection: Lord of the dance | The

At the time, officials noted movement of some of the Syrian stockpiles but said none appeared to be deployed for imminent use.

NPR: Commander: Contingency Plans Under Way For Syria

Even after the shell-laden Rococo movement wound down in the late 18th century, oceanic accents appeared on metalwork.

WSJ: Nautical Home Design: D��cor Takes to the Seas

Sometimes it appeared to be plummeting toward the earth, at others corkscrewing in a spiral movement, and at still others it looked to be just drifting.

NEWYORKER: The Daughters of the Moon

Despite its dominance, the Muslim Brotherhood appeared to have been caught by surprise by the strong showing of the more conservative Salafist movement, which advocates the adoption of strict Islamic law.

CNN: Brotherhood steers tricky currents of post-Mubarak Egypt