While I'm trying to find good anime panels/presentations I'll post this collection of Mike Toole's presentations on bad anime dubs that is a very fun time. Might post the others if I find enough worth posting about.
Dubs That Time Forgot
Otakon '08 [Part1] [Part 2]
Otakon '09 [Part 1] [Part 2]
Anime Boston '10 (incomplete) [Part 1] [Part 2]
Anime Boston 2011 [Link]
Anime Boston 2012 (incomplete) [Part 1] [Part 2]
Otakon Vegas '14 [Link]
Related Stuff
2007 ANN article on "Dubbed Songs From Hell" and accompanying video
2012 ANN article "A Tale Of Two Dubs" and accompanying video
I'll throw in this "20 Lost/Unreleased Anime Dubs" thing since it fits. Kept coming up in the search results when I was looking for Mike Toole's presentations.
Part 1: https://www.youtube.com/watch?v=OpxJSivNbBc
Part 2: https://www.youtube.com/watch?v=agv4Uxrq_q8