Where can I get all the Stack Overflow podcasts in one click?
Of course you need more than one click to go back in time to the older ones.
Joel posted the feed link on his blog a while back which is https://blog.stackoverflow.com/index.php?feed=podcast
The IT Conversations StackOverflow RSS feed contains the last 30 podcasts. (currently #39 - #68, Jan. - Sept. 2009)