Online Jig-Saw

http://www.jigsawplanet.com/?rc=play&pid=072d7a998f9d

This is rather fun and surprisingly like 'The real thing'.
Tip - you'll hear a click if your piece is correct!
- Move the pieces by holding the mouse, release to stop.

You can make your own by going to www.jigsawplanet.com
You don't even need to log-in.