It's kind of cool how in lisp you're supposed to do macros to change major aspects of how the language behaves, but in C if you try having a little bit of fun with #define and the pre-processor everybody starts getting just extremely rude at you.
To be fair, C #define macros are extremely dangerous and error prone in ways that Lisp macros aren't.
I haven't bought into this "Lisp macros are the best thing since sliced bread" idea, but without a doubt they are infinitely more awesome than C macros.
