There have been many companions who have witnessed The Doctor's regeneration over the last 50 years.  We here at The Sonic Toolbox are taking the time to examine how each of those companions react to and deal with the change that happens to The Doctor.
There's also news and feedback. And a plug for one of our listeners who also has his own podcast (link below and on FB).
WARNING: Contains some rabbits
Links: Fuzzmond's Blurcast Episode 27 Fuzzmond's Blurcast Main Show Link