Sunder: big problems here with the financial aspect. Crap breaks when used. Tough noogies. that just shows where the faults in the economic system are because you cannot buy more weapons. Hope your DM doesn't use criticals and you have a critical miss!
Of course, if you cannot have your item destroyed, then you also should not be able to destroy an opponents. Where is that entire line of tactics?
Backgrounds: Yup. Ask your DM, end of story. You can always make a bigger background for your character than your DM requires, but still get things approved through your DM so you don't claim some nobility that isn't observed within the game.
Home-brew: Birthright sucks. Don't emulate it.
Class abilities: Says challenge the player not the stats like "detect evil". :clap:
Favorite campaign/character: who cares....why not ask how is your college room mates father's sister's cousin's pet? totally wasted air time and bandwidth to download. put it in a blog so I can avoid it.
Powers: WotC over-values a LOT of their own work. Maybe things should be valued from outside of the building with more importance. That is where the customers come from afterall.

Dave: At-wills are used all the time not just situational. It is built into the system, why not use it?
Pronunciation: Ask Frank Mentzer for a spelling guide for phonetics for D&D.
Fungible: ....
Feedback, 4th isn't working: zzzzzzz
Healing surges...WHY!?!?!?!: No. He probably means the idea behind healing surges all together. I feel this question was not answered, but twisted to what they wanted to answer. No I would be a cleric without the stupid roles like "leader". I also never use my healing surges. I don't even have them on my character sheet.
Starting a group: The DMG should tell people this, no question needed.
PHBII: If you have a pH of 2, you are probably dead or being digested by something.
Power gamers: Yup, they are jerks. Oh goody, we get graded on Dungeon Delves. Do we get gold stars, or put in detention or summer school if our scores are too low?
-Gnome Chasing! A new game due out in time for Christmas! Great as a stocking stuffer along with Three Dragon Ante and Inn-Fighting!
DDI: Character Builder, Mike; not creator. Recover from your system shock home-brew rules for 4th before podcasting.

Adventure Builder would take a LOT of scripting for D&D! Dave: RAWR! Mac support! iPhone, bad; dice rollers good.
The preceding thoughts were typed while listening to the podcast, and are impromptu based on a first listen.