You can bet the Yanks will NEVER remake "New Tricks".
Americans are TERRIFIED of anybody over forty appearing on tv, let alone somebody over 65!!!
I don't know about that...
Matlock (Andy Griffith was no spring chicken in that show);
Boston Legal (how old are William Shatner and Candice Bergen now?);
Going waaaaay back, Fred Mertz (ie William Frawley) in I Love Lucy was 64 in the first season and 70 in the last;
and of course, The Golden Girls...