I'm happy to announce the *alpha* availability of Go libraries for various Google APIs:
The google-api-go-client project linked above contains both the code generator as well as the auto-generated and goinstall-able packages for each Google API, like:
Note that it currently requires a tip version of Go, though, not the r59 release. Once I'm happy that the code is relatively bug-free and it graduates from alpha to beta, then I'll make sure it works with the "release" version of Go. Until then, though, it's much easier for me to only work at tip.