The Deep End Design Podcast is a Graphic Design Podcast by Wes McDowell, and various hosts, most of whom are creative directors or owners at graphic design firms. With over one hundred episodes, The Deeply Graphic Design Cast is a great source of information for graphic and web designers, and people that want to get started in in the field with episodes that feature tips on creating a resume, improving workflow, and creating or improving online portfolios. I've found a lot of the things they talk about to be both very informative and interesting to listen to. They talk about things that people don't learn when they go to school for graphic design such as in their episode "Moonlighting By Design," and that your portfolio should speak to your clients interest, and talk about how it will solve their problem (Client Focused Portfolio Websites), even though your not designing for them, you're designing for your client's clients (Reality Checking Your Freelance Design Work).
In the episode "Reality Checking Your Freelance Design Work", they recommend creating customer personas that are "an amalgamation of all the people that are [the client's] number one customer. Give that person a name, give them a job, give them age, hobbies... even get a photo to go with," which I thought was a good idea to keep a design project on track, Losing track of the focus was something that the hosts admit to having done before, and if they've done it before, it can happen to anyone.
Their series has so many preventative measures, it reminds me of Eleanor Roosevelt's quote, "Learn from the mistakes of others. You can't live long enough to make them all yourself." The episodes on client contracts are particularly useful in this, as many graphic designers make the mistake of not having thorough enough contracts (even though AIGA has templates for graphic designer contracts), which can lead to big problems. This is definitely a great podcast for working designers and design students to learn more about their field, which can be listened to by downloading the podcasts or checking out the audio on their website.