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)

>>35
Shut up lisp weeny, you are wrong and your language will never be popular, suck it.
(/ 5 4 (* 3 2)) produces 5/24 is not rational arithmetic.  A rational language would call syntax error on this bullshit because any language where infix notation isn't the default is retarded.  Notice I said not the default so that you couldn't respond with ZOMG MACROS.