A video tribute to Peter Bergman 

http://www.youtube.com/watch?feature=endscreen&v=C_S5m46cT48&NR=1

and Philip Proctor's upcoming radio tribute:

Firesign Theatre's Philip Proctor To Premiere "Tribute to Peter Bergman" 
on Joe Bev's Comedy-O-Rama

The Comedy-O-Rama Hour will present the world premiere of Firesign 
Theatre's Philip Proctor and his tribute to fellow Firesign-ian the late 
Peter Bergman on Saturday, April 28 at 1:00pm (EST) / 10:00am (PST), at 
cultradioagogo.com.

Phillip Proctor says, "'Peter Bergman and the End of the World' is a 
piece I was inspired to write after losing my dear friend, collaborator 
and Firesign partner to leukemia in February.


Read more:
http://www.prlog.org/11854132-firesign-theatres-philip-proctor-to-premiere-tribute-to-peter-bergman-on-joe-bevs-comedy-rama.html

Lastly,

A series of TV commercials they made for a VW dealership (thanks to Nan Rubin for the link):

http://archive.org/details/Firesign_Theatre_Podcasting_003

From Jamie Dell'Apa Saturday midnight to Sunday 3am - the (drunk) drive time shift.