If you’re thinking about starting a podcast, here are my recommendations for equipment and software.

Audio Shows
You’ll need:
1) Microphone
2) Recording/Editing Software
3) Hosting

Microphone
–Platronics DSP-400 Headset
–If you’re willing to spend a little bit more, take a look at the Snowball Mic from Blue. It’s my favorite USB mic.

Recording Software for PC Users:
–Castblaster, $50
Record, edit, tag and if you want, offers easy uploading to PodShow.com for hosting
–Audacity, Free
Record and edit

Recording Software for Mac Users:
–GarageBand, Free on all recent Macs, or $79 as part of iLife
The newest version of GarageBand has built-in podcasting features, so it’s worth upgrading
–Audacity, Free
Record and edit
–Audio Hijack Pro, $32
Record and Enhance Audio

Hosting:
–PodShow Network, Free
Offers free hosting for your files. Directory as well.
–Dreamhost, $7.95/month and up

Video Shows
You’ll need:
1) Microphone
2) Camera
3) Recording/Editing Software
4) Hosting

Microphone
You can use the built in mic on whatever camera you use, but if you use an external mic, you’ll get better quality.
–Senneiser ew 100-ENG G2 Lapel mic

Camera
Canon HV30

Recording and Editing Software for PC Users:
–VlogIt, $29
Record, Teleprompter, Live Titling and Graphics, and Chromakeying
–Audacity, Free
Record and Edit
–Pinnacle Studio, From $29.99
Record and Edit

Recording and Editing Software for Mac Users:
–Videocue Pro, $89
Record, Teleprompter, Live Titling and Graphics, and Chromakeying
–iMovie, Part of iLife, $79
Record, Edit, Special Effects, Titling, Transitions
–Quicktime Pro, $29.99
Very simple editing

Hosting:
–PodShow Network, Free
Offers free hosting for your files. Directory as well.
–Dreamhost, $7.95/month and up

Once you have your show completed, make sure you’re listed in the major directories.
iTunes
PodShow
Podcast Alley
Podcast Pickle

These are some podcasting related forums:
iTunes
Podcast Alley
Podcast Pickle
GBTVTalk.com