Conversation so far:
what is jello biafra's alternative tentacles?
Biafra co-founded the record label Alternative Tentacles.
who did he co-found it with?
Biafra has been the owner of the company since its founding.
when was it founded?
June 1979.
what did he release through the company?
the Dead Kennedys released their first single, "California Uber Alles".
when was the single released?
CANNOTANSWER.
who were the dead Kennedys?
CANNOTANSWER.
what happened to alternative tentacles?
Biafra began co-hosting The Alternative Tentacles Batcast, a downloadable podcast hosted by alternativetentacles.com.

Question: who was he co-hosting it with?
Self-contained rewrite: Who was Jello Biafra co-hosting The Alternative Tentacles Batcast with?