He's got 2:23 on Contador. There's one mountain stage left. It appears unlikely that anyone can put any time into Rasmussen in the mountains.
So unless Contador can drop Rasmussen on the Aubisque (which appears unlikely), it's likely that Rasmussen goes into the final TT with a 2:23 lead on Rasmussen, (and larger gaps on everyone else.)
In the first TT, Rasmussen only lost 37 seconds to Contador, so it appears unlikely Contador could overcome a 2 minute plus deficit.
Barring a meltdown the Chicken is your 2007 TDF Winner.