Has certification helped me in finding a job? Yes.
I cleared
SCJP in Jan 2000, which helped me to land on my first fulltime programming job in Feb 2000. Doesn't mean that Interviewer took everything for granted when I told him that I am certified, but that impressed him a lot. And the knowledge gained during certification preparation helped me throughout the technical part of the selection process.
Ever since Jan 2000, I have cleared 4 interviews (last in July 2002) and with each of them certification has been a plus point, but never the deciding factor.
Ashok.