In reply to xyz:
Yep, brilliant race, thrilling finish, and whilst we've had a few GTs where the lead has changed hands in the final days, I can't remember any one which has seen 3 different leaders in the last week, let alone 3 on the last 3 proper stages.
Incredible yes, but is it unbelievable?
Ok the comparisons with Landis are way out - we're just talking a minute or so, not ten. I think Nibbles weakness in the first 2 weeks was exaggerated, maybe due to high expectations by a partisan home media. He was still 4th, and may have been 2nd had he not had that mechanical on the TT. And he lost more time on a very short but ridiculously fast stage. Valverde is a fading force, hampered by a known issue with high altitude, whilst Chaves and Kruiswijk were inexperienced and with weak teams. We may not have predicted how the last 2 days would pan out, especially SK's crash, but we shouldn't be too surprised that Nibbles kept going when others cracked. The others lost it as much as he won it.
BUT, he rides for a dodgy team, and more crucially employs a dodgy doctor with a very dodgy past. I simply can't understand why the personal doctor of Marco Pantani has not been investigated and still allowed anywhere near a cycling team.
We shouldn't assume someone is doping just because they win a race - but we shouldn't forgot that the sport's dark days were only a few years ago and many of the facilitators are still involved.