Nadal Agassi in the final is everybody's dream final.
Let's just hope Agassi will be able to keep up with Nadal, who's moving of course much better than all opponents Agassi faced here. He should be able to shock Nadal with his on-the-rise redirects from time to time and with his intelligent use of the court. Also with his serves (very good today).
But beating Nadal is a different cup of tea, it requires lots of energy and speed and I am not so sure Agassi still has them to the degree required to beat a current number 2. This is still his best surface, but that'd be amazing.