LOL you beat me to that joke!

Seriously, dude, bicycles are (legally speaking) cars; if they are on the road they must be on the right side. Unless you are in England of course.

If I ever ride against traffic, I do it (a) on the sidewalk, and (b) slow, like 10mph or slower, (c) yielding to pedestrians because I'm tresspassing on their sidewalk and (d) being super-vigilant about driveways, because cars have no reason to expect a bike coming up the sidewalk on their right. I would NEVER ride on the wrong side of the road, even in the bike lane.

In fact, I remember another biker almost crashed into me coming head on going the wrong way in my bike lane, I was super pissed!