One for the Plane buffs.

[swannymere]

Strangely fascinating website depicting all the aircraft in flight at any one time, copied from QI on Twitter.

Planefinder.net

 

[Gazz270]

how cool is that,boats too,

(yes i know,how sad am i)

 

[Palfrem]

Got to hand it to BA "Speedbird". Great call sign!

 

[janner]

Very cool. The boat version is Live Ships Map - AIS - Vessel Traffic and Positions

 

[evdok]

Got that on my iPhone, bloody brilliant!

 

[Mr E]

Mrs E uses this (or similar) to track incoming VIP passenger flights, and co-ordinate all meet and greet activities, especially when thinks are running very late (or early).