I run a few side projects with a pool of about a dozen developers. Some love Java but others won't touch it, some are C developers, one of them only has experience with PHP, there are lispers, an Erlang zealot and even a Delphi refugee. I personally like Perl and OCaml but couldn't convince them to even consider them. It was a nightmare to agree and settle up with something.
Enter Go, and while we all agreed that the language kind of sucks and $FAV_LANG is better, we somehow stopped bike-shedding and started to get real work done.
Sure, it's not the most exciting language in the block and its community seems to live in the 70s, but sometimes targeting the lowest common denominator can pay off, as is the case for us.