Here's what I subscribe to:
http://heybryan.org/mailing_lists.html
I really like:
http://www.neuroinf.org/mailman/listinfo/comp-neuro
http://lists.ucla.edu/cgi-bin/mailman/listinfo/grg
http://postbiota.org/mailman/listinfo/tt
https://groups.google.com/group/diybio