My favorite returning podcast lecture series is Berkeley's History 5, which, for some reason, has not been podcast this last semester. It is always possible to take one of previous semesters; you even have a rich choice between professors (Hesse, Anderson, Laqueur) However, you can also go to other sources for receiving the history of western civilization after the middle ages.
One such example is the course history 2312 from Temple College in Texas. Host Gretchen Ann Reilly speaks to us directly in fifteen minute segments and in over 30 lectures she matches the breadth of history 5, but is more modest and accessible for beginners than the Berkeley material. If you ever needed a basic entry course into modern history, this is where you should go. Now is also a good time as the course runs at this moment and the feed is up and running - which it is not for most of the year.
Another option is a course at UCLA, which gives history since 1715. This course has just started and I will review it in due time.
More Gretchen Ann Reilly:
Gretchen Reilly history podcasts,
American History before 1870.