I'm also crazy addicted to comedy podcasts. I subscribe to these:

Doug Love Movies - Hilarious host and guests, I love the Leonard Maltin Game
Pod F. Tompkast - Ramblings and skits from my favorite comedian on the planet
Comedy Bang Bang - Improv humor in an "interview" format
How Did This Get Made - The most laugh-out-loud funny one, they make fun of terrible movies
Nerdist - Genuinely smart and funny hosts interview interesting guests. Can sometimes get too raunchy for my tastes
WTF - Another smart interview show, more serious

The non-comedy ones:

Filmspotting - Thoughtful movie reviews and fun top 5 lists
In Our Time - Expert panels talk about a really wide variety of subjects.