I remember once hearing a rising comedian say that he judged other people's work by his degree of jealousy at not having come up with it first. I can't remember who it was - I was too busy raging that someone else had thought of the line before me - but if we're honest, the measure holds true in almost everything we (don't) do.

So here's a truly awesome idea, executed by a brilliant woman whose magnificent daliance makes me sick with envy, damn her...

When it comes to visiting all of London's 274 tube stations, it's become something of a cliché to do it against the clock. Even for those luck.. err, skilful enough to shave minutes off the world record time (currently 18 hours, 25 minutes and 3 seconds, by the way) there must come a sense that, aside from beating those who went before, very little has actually been achieved. One's life is hardly enriched by winning a title simply because the Waterloo & City line was running a good service...

Far better to take the time to enjoy the experience and make every visit count, which is what our lady - known to me only as Tubewhore - is doing, and blogging the experience for us to enjoy too.

You'll certainly remember her if you find yourselves sharing a train. She's dressing for the occasion...

... and if the hair isn't a giveaway (presumably the Met. line is a favourite?), the smell of Tippex should do the trick as she strikes off yet another station from her map.

I think this is a fantastic project, and I both admire and envy her for taking it on. She's certainly doing it justice. Whilst her mission statement says it's all about being 'able to say (she's) done it', it's clear she's getting so much more from her experience: inspiration for artwork as she soaks up the atmosphere of each and every one of the locales; great interaction with the people of London as she explains her mission, and cajoles them into playing their part with the camera; she's even had an offer of tea from one of her readers when she visits her local station!

We're all getting something out of it, in fact. Take a look at some of the atmospheric photographs she's giving us, along with a witty and incisive commentary that yes, once again, makes you wish you'd done it first.

I'll be reading every step of the way to her remaining 186 stations, and enjoying a living account of London's Underground network in the making. And when it's done, I shall still envy her for a great deal more than a tube map completely obscured by Tippex.