I need more cowbell!

"Guess what?  I got a fever!  And the only prescription is MORE COWBELL!"

Bruce Dickinson (Christopher Walken)
Legendary record producer

Just saw this again on an old Saturday Night Live.  Not the best bit, but what is it about Christopher Walken that makes this stuff work.  Anybody else in this role, and it would never work.

[This bit inspired one of my latest two quotable quotes.]