crystal clarke and pip andersen. relative unknowns. crystal clarke, an american, studying drama in london. >> pip andersen, british, appeared in the sony ad for superman. >> the two picked for stardom from, can you believe it, 67,000 hopefuls who applied at an open audition last november. there's a very special anniversary also for classic american sitcom. >> exactly. 25 years ago this weekend, "seinfeld," a show billed as being about nothing, made its debut in living rooms across america. >> we went back to my place. yada, yada, yada, i never heard from him again. >> no soup for you! >> not that there's anything wrong with that. >> "seinfeld" trivia, in an early draft george's name was bennett. jerry's puffy shirt now lives at the smithsonian. and how many times did jerry say hello, newman? believe it or not, just 15.