Quoted from DennisK:I use a Blue Yeti, and when we record groups in-person that's what we use since it can be easily switched into omnidirectional to catch sound all around it. For most sessions, I'm solo in the room and put it in cardioid to reduce background noise. Tony uses a Blue Snowball on his end (we record through Zencastr). So, if you want a USB solution, we both are satisfied with those models.
I'll second the Blue mics. I record with a Snowball and it's always been fantastic. I've used it at E3 for sit down interviews and when we've done The Pinball Podcast live. It's a great all around mic. Price to performance, they're just amazing for podcasting.