Robert Wagner was originally cast as the voice of Charlie, but was replaced with Victor Garber, who appears uncredited, as John Forsythe did in the original series.
The Townsend Agency is located at 1976 Ocean Drive. 1976 is the year the original Drei Engel für Charlie (1976) television series debuted.
If you want to place a face to Charlie, he's Victor Garber from Alias: Die Agentin (2001) where he played the part of Jack Bristow.