What is a good first language?

My 20 year old brother wants to get into programming.  I want to set him up with a language that has these features:

1. Easy to learn, must have simple syntax
2. Immediate results, easy to make graphical and text outputs.
3. Fully featured language(I want him to be able to easily progress into more advanced stuff and not be limited by the language)
4. Fast(So he gets the idea of how powerful computers are)

I hate to say it, but Java would be good fit for what you want.  Of course it's not as fast as native, but someone new to programming won't care, it will just seem really fast to them regardless of the language.

Set him up with a minimalist IDE like JBuilder, and set it up to do java applets.  That will give you easy graphics right away.