As a lefty, I'm looking forward to not having the headphone cable dangling across my papers area. Suck it, righties! It's your turn to be slightly inconvenienced!

But...lots of headphones only connect on the left side, and run the connection for the right earphone along the headband. I'm pretty sure it's always left or both, never right. Putting the jack on the right really screws that up, even for lefties!

That's fine, it can loop around the back and run along the left edge of the computer. Better than having to stick straight out there.

Just as a counterpoint; Sennheiser HD25 headphones connect from the right headphone in the default configuration, however there are plenty of replacement cables of various types, some of which may change this. I agree that its quite unusual though.