The ad that's been running on Drabblecast drove me here to give my favorite podcast some love. It's We're Alive: A Story of Survival
I LOVE this audiodrama. It has beyond excellent sound production and the writing--while very good at the beginning--becomes better and better as time goes by. Same for the acting.
The plot and characters are 3D, multicultural in the way the world is, and not stereotypic. Plus, the military details are spot on because the writer was in Iraq. When a weapon is fired or someone uses a zipline the sound is the sound of the actual thing. The guy knows how the army works etc.
Obviously, it's about "Zombies"--the genetically mutated human kind--that seem to adapt to anything that you throw against them. Supposedly the how and why will be revealed--tho I find guessing to be fun. The writer has said he hated the end of Lost--and so far is a fairly original writer--so I'm crossing my fingers for a worthy ending (I'm looking at you BSG).
It also has a forum and "fan podcast" on iTunes: "We're Not Dead".