RHD, by LandCruiser.
-it's nearly impossible to pass on two lane back roads, you can't see around the vehicle in front of you
-the mirrors give you a weird perspective when passing to the left in normal 2+ lane roads (since you normally pass to the right in a RHD)
-drive thrus, parking garages, ATMs, mail slots, etc. are a whole new ballgame
-getting used to shifting with your left hand is easy, all the other controls are in the same place
-you instinctively drive too close to the right shoulder until you get a feel for the width of the vehicle, where there can be deep puddles, huge potholes, and ice
-you either overshoot or undershoot left hand turns at intersections until you get a feel for the width of the vehicle
-parallel parking on the right of way is a breeze
-can't drop off passengers as easily (or pick up hookers)
-you're much more likely to survive an offset head-on collision
Overall, it takes about 2-3 days to get used to it. The biggest PITA for me is the drive through and passing on back roads, everything else is very easy to get used to