2003 Specialized Hardrock, 2004 LOOK KG386i, 2005 Iron Horse Warrior Expert, 2009 Pedal Force CX1
I'd consider that video far from excellent. Way too much emphasis on something that won't keep you safe at all if you're out riding like an idiot (that something is a helmet). Not nearly enough emphasis on being aware of traffic around you and proper position within a lane. There's even a shot of a guy turning left from the far right side of a left turn lane. At least they didn't show the cyclists swerving around an opened car door (they were positioned far enough away that it wasn't an issue).
I liked the emphasis on following traffic laws and acting like a vehicle while you're on the road. That's a concept that too many cyclists around here have trouble with. The video was clearly aimed at the novice cyclist, or an adult who hasn't cycled since childhood, and it cleared up a lot of issues that those two groups frequently have trouble with.
I agree that the left turn example was bad. Ironically, the video ended up showing why it's a bad idea to be far enough to either side to share a lane as you are preparing to turn. But the clearly didn't mean to show a bad example.
I don't like the left turn example - the cyclist is in the far right lane sharing position when he/she should probably be in a lane controlling position.
While pausing the YouTube video at 4:59, that LTOL looks to be about as wide as the through traffic lane shown at 5:01 (where the two cyclists are in the far right lane sharing position of a through lane). Not sharing one while sharing the other is, IMHO, more personal preference than anything else.
BTW, did anyone notice (at 5:01) what the car further up the road on the right is stradling?