a few ...
the Boston Blackie series, Charlie Chan series, Mr. Moto series, Sherlock Holmes series w/Basil Rathbone, Thin Man series w/William Powell
the original 30's Hitchcock's set, The 39 Steps/The Lady Vanishes etc
Wages of Fear, the original 50's release of what was redone in the '70s as Sorcerer (sound track by Tangerine Dream)
The Last Run/The Hospital both George C. Scott classics
30 Seconds Over Tokyo, Run Silent Run Deep, Torpedo Alley
numerous Euro crime movie series you might catch occasionally on PBS, or see if you stream the mHz network - Detective Montalbano, Murders @ Barlume, Fog & Crimes, Nero Wolfe, Dom Matteo, Commissario Brunetti (Italian), Beck (Swedish), Agatha Christie's Criminal Games, Maigret (French), Professor T (Belgian) - all subtitled
The only streaming I do is the free Master's coverage, so don't know what all is available on the various services. Undoubtedly some of the above can be found somewhere online if one digs deep enough, but I prefer to just grab the disk & stick it in the Oppo.