Aaron Greenberg is the Microsoft Man of the Hour when it comes to talking about Xbox lately, as he conducts interview after interview.

Two of the more recent ones come from Kotaku and Eurogamer, where among other things, he discusses the Xbox 360 lineup of games for 2009. Also, for the latter, he answered the question of his reaction to Sony's chart with a bout of laughter.

First, Kotaku...

When are we going to hear more about the 2009 line-up?

Greenberg: We take a different kind of approach to how we unveil news throughout the year than other platform publishers. We tend to talk about products a little closer to when they're ready. Last year at CES we didn't talk a lot about our holiday line-up, we waited until July.

We absolutely have a lot of innovation, we have new first and third-party games coming out this holiday that we have not announced yet. We'll probably wait until later in the year to talk about those.

The team that built the NXE is a massive team that's working on things like Xbox Live Primetime in the Spring, but new stuff, new partnerships, new content and things that we'll be announcing throughout the year. So stay tuned. There's a lot coming, for sure. -- Kotaku

And now, Eurogamer:

Eurogamer:What about Microsoft's first-party line-up? In 2008 you published 11 boxed first-party games in Europe. At present, the only titles on the schedule for 2009 are Halo Wars, Halo 3: ODST and Ninja Blade. Will there be more out before Christmas, or did investment peak last year?

Aaron Greenberg: We don't share all our news at the beginning of the year. You saw that last year - we waited until July and E3 to announce things like the New Xbox Experience, You're in the Movies, Lips...

We sure have not announced our line-up for the full year, and we'll probably wait till later to do that. We typically take the under-promise and over-deliver approach; we like to talk about products a little bit closer to when they're ready to share with consumers.

Eurogamer: So there are games in the pipeline for this Christmas that we just don't know about yet?

Aaron Greenberg: Absolutely, without a doubt. I wouldn't even isolate it to games. I would also remind you that we have a massive team focused on innovation. The same team that built the New Xbox Experience is bringing in all types of new experiences to consumers in 2009.

I can safely say that if you're an Xbox 360 owner today, you will end 2009 with a whole slew of new features, new content, new partners, new games that today you don't know about. -- Eurogamer

And finally, I've seen the question of Microsoft's "actual" numbers come up in our comments on occasion, such as discussing how many Live accounts of a given number are inactive, or how many "sold" Xboxes come from one customer buying four of them as they keep breaking.

Well, this only addresses the former unfortunately, but I felt it would be of interest:

Microsoft recently claimed 17 million Live users and 28 million Xbox 360s sold...

Greenberg: Active users.

Active. So what's the total of Live members that you've accumulated?

Greenberg: Uh... A significantly larger number than 17 million. To be clear, we are pretty conservative on how we report our members. It is active members — you have to own an Xbox 360 and if you're not active in the last six months, we recycle the gamertag and we remove your account. It is a true number of the people we have on the service.

I think it's important to note, if you compare those to PSN, those numbers you can have just a PSP, you can create an account on the Web. We don't count Web accounts.

You're an active member on PSN until you create an account. So, essentially forever. It's definitely apples to oranges when you compare those numbers. -- Kotaku

Click the Kotaku link for more about Microsoft's presence at CES, thoughts on future pricing, and more; hit up Eurogamer for more of Greenberg's thoughts regarding Sony, Nintendo, and the possibility of another NXE-like overhaul.