With the FCC's approval, Sirius and XM had a shotgun wedding over the weekend, and is now officially Sirius XM Radio, with over 18.5 million subscribers (technically XM is a subsidiary of Sirius, making it the wife, I guess). Let the promised savings and awesomeness begin. [InfoWeek]
First of all, @Stacky Botrus, that's excellent.
Second, I've always liked the "Sirius" brand, but I've also thought the "XM" name for the technology makes it easy for consumers (AM, FM, XM - nice and simple).
Sirius XM Radio is perfect... best possible outcome.