In response to Parisa’s Riddle Me This post, I’m finally getting around to posting a few brain teasers of my own. To start out, here is a simple one I got from Mikhail at work.
Given the following dot configuration:

Connect all four dots using three straight lines such that you draw continuously (one line is connected to the next) and you stop drawing the same place you started.
For the record, I received the first solution to this problem from Ben via email. Extra points for drawing up the solution in AutoCAD.
Parisa has also submitted a correct solution. Bonus points for faking an AutoCAD drawing.
Fake? Apparently someone has not gotten a crack of the 2008 version.
[...] to Brain Teasers I, Brain Teasers II, Brain Teasers III. Stop reading now if your still figuring out the [...]