Papa's Basement is a comedy podcast founded in 2007 that chronicles the life of its host, John Papageorgiou (see, the "Papa" in the title isn't a creepy S&M thing!). He and his co-hosts, Eva Kriksciun and Mikael Johnson, alongside an assortment of guest comedians, throw a battery of entirely improvised comedy your way in an effort to win your loyalty and, ultimately, sell you themed merchandise.
*Don't get litigious about the "world's oldest comedy podcast" claim. I put an asterisk.