The ACM podcast | click here to subscribe
The ACM is a dual entry podcast. This confuses some people so I'll explain it a little bit. The podcast has two entries for each movie one is the MPEG4 ipod version the other is a link to the on-deman streaming version. So you have two options for viewing. Currently There are about 123 movies available in the podcast.click here to subscribe.

The Adventures of Superman | click here to subscribe
The Adventures of Superman radio program aired between 1938 and 1951 on Mutual and ABC with Kelloggs as a sponsor. While being aired on Mutual it was a 15 minute show but was increased to a half hour aftering moving to ABC.
Cast: Clayton "Bud" Collyer as Superman/Clark Kent. Michael Fitzmaurice in 1950. Joan Alexander as Lois Lane. Julian Noa as Perry White. Jackie Kelk as Jimmy Olsen.
Click here for archvie.org site.

The Hall's of Ivy 1949-1952 | click here to subscribe
The Hall's of Ivy starred Ronald and Benity Coleman, and followed the lives of William Todd Hunter Hall (Ronald Coleman) and His wife, a former British stage actress, Victoria Hall (Benita Coleman). Early critics of the show felt that it might be to "intellectual" for mainstream audiences. However the show became a big hit and ran from 1949-1952 on radio and then made the transition to television where it ran for another two years.

The Shadow 1937-1954 | click here to subscribe
The Shadow is a fictional character created by Walter B. Gibson. The character is one of the most famous of the pulp heroes of the 1930s and 1940s. Made even more famous through a popular radio series, the Shadow has since been featured also in comic books, comic strips, television, and at least seven motion pictures. Regardless, the Shadow is best regarded for its radio years, in which pulp crime fiction received perhaps its most compelling broadcast interpretation. Even after decades, the unmistakable introduction from The Shadow has earned a place in the American lexicon: "Who knows what evil lurks in the hearts of men? The Shadow knows!"
Taken from Wikipedia.org