oscar hijuelos, good to see you. >> thank you, ray. i love being on your show. >> lehrer: finally tonight, remembering peter falk, the actor who died yesterday at beverly hills, california. he was best known for playing the rumpled detective columbo for 30 years on television. the police lieutenant wore a wrinkled raincoat that was his trademark. suspects usually underestimated him, but he always got his man in the end, often by asking, "just one more thing, sir." here's an excerpt from an episode that ran in 1976. falk is closing a murder case against william shatner, who plays an actor best known as a tv detective. >> fascinating. but as lieutenant lacern would say, where there is no proof, there is no criminal. fascinating. >> but i think, sir, i have the proof here. >> what truth? lieutenant, there are no fingerprints on that gun. you said so yourself this morning. this has been a rather silly demonstration, lieutenant. >> well, you're absolutely right again, sir. the killer cleepd the gun of all incriminating prints. but the thing