Yeah, the weekend Navigo thing is what I've been doing, it's handy that you can get all the way to Melun for basically free and then its only another 10 minutes or so to Bois de Rois/Avon. The only pain is the last few miles without a car! The last couple of times I took it as an excuse to do some trail running through the woods, but then I wasn't carrying a mat around. That's actually the main reason putting me off getting one, but I've realised its going to be pretty much essential to make any progress. Also, everyone seems to be using them..
lager - thats the best vid I've seen in an age... at first you think its a micky take then you realise, looking at the guys face, that its not, very good.
I am trying to imagine a better way to start climbing, but I cant.