If you're interested in trying the Go Programming Language I've created an RPM for Fedora 13 to get you started quick (this package is in no way suitable for submission to Fedora).
Install the Go package using yum.
sudo yum localinstall --nogpgcheck go-0.0.0*.rpm
Open a new shell.
Create a file named hello.go and enter the following code:
package main
import "fmt"
func main() {
fmt.Printf("Hello World!")
}
Compile, link and run (replace 6 with 8 if you're using i386).
$ 6g hello.go
$ 6l hello.6
$ ./6.out
You can view the latest RPM source on GitHub.
Update: It looks like someone has already created a much better package.
Licensing information is available on the about page, for additional questions or comments feel free to contact me.