Astronomy Cast (astronomycast.com) - 7/10. Dodgy production values let this one down but the content is always interesting.
Background Briefing (ABC) - 9/10. Usually excellent and interesting investigative journalism.
Big Ideas (ABC) - 7/10. Sometimes pretty boring but occasionally excellent. Philosophers etc discuss ideas with the host, usually in front of an audience.
Hindsight (ABC) - 6/10. Only occasionally is this really interesting, unless you're in love with Australian history. Sometimes it's great, mostly meh
Hollywood Babble-On (SmodCo) - 9/10. Funny as f**k this one. Get amongst it. Kevin Smith and Ralph Garman performing live and recorded as a podcast, celebrate and tear celebrity culture apart (sort of).
Jay and Silent Bob Get Old (SmodCo)- 7/10. Each episode is pretty much the same but still Jason Mewes is pretty funny IMO. Prepare for lots of dick jokes.
Late Night Live (ABC) - 8/10. Don't be put off by Philip Adams' reputation as a leftie. He is but the show isn't about him it's about his guests, who are usually very interesting.
NRL Unleashed (Sportal) - 8/10. Very good imo.
Ockham's Razor (ABC) - 8/10. 15 minute talk by a scientist (usually) about whatever's on their mind. Well worth it.
Point of Inquiry (Centre for Inquiry) - 7/10. Not as good as it used to be and the episodes tend to be a bit same/same. Still worth a listen.
Radiolab (WNYC and NPR) - 10/10. Fantastic show with fantastic sound design and amazing collections of stories. Some episodes go for an hour, some are "shorts", but they're always fascinating.
Rear Vision (ABC) - 7/10. Another history podcast but usually looks into political history from around the world.
Ricky Gervais Show - 10/10. Not really a podcast any more but you can buy them pretty cheap these days. Karl Pilkington is a f**king genius, the mong.
The Science Show (ABC) - 8/10. Pretty obvious what this one's about. Great show.
StarStuff (ABC) - 9/10. Astronomy and related topics. The host is an absolute geek for this stuff but it's really interesting.
Finally our very own View From the Hill (RadioLeagueUnlimited) - ??/10. Only listened to a couple of shows and while some of it was good, it falls flat sometimes. I'd love to be involved if I had the time. Give it a listen though!
