Microsoft released the New Xbox Experience update this week to all Xbox 360 consoles. Here is what you will can expect, you can find a video here on xbox.com explaining all.
On the Xbox Live's Major Nelson Blog you can find further information, including the Top 10 things to do when you get the new Xbox Experience and the New Premium Themes.
You may also be interested in the other official Gamerscore Blog where you will find additional up-to-date information.
Do you have a Windows Vista computer at home with Media Center? If you don't already know your Xbox 360 has the ability to connect directly to your computer and act as a media extender. What does that mean you may ask, well simply speaking it allows you to unlock all your music, videos and photos stored on your computer and access them through your Xbox with ease. Read More...
Finally, on the blog I also found a list of the most popular games, you can read the original post here.
Xbox 360 Top Live Titles (based on UU’s)1 Gears of War 22 Call of Duty 43 Halo 34 CoD: World at War5 Left 4 Dead Demo6 Fable II7 GTA IV8 Fallout 39 Madden NFL 0910 Gears of WarTop Arcade Titles (Full Versions purchased)1 Worms2 Portal: Still Alive3 Castle Crashers4 Vigilante 8: Arcade5 Ultimate Mortal Kombat 36 UNO®7 Are You Smarter Than a 5th Grader8 Duke Nukem 3D9 Pinball FX10 Marble Blast UltraThe above arcade list is based on full versions purchased.Original Xbox Top Live Titles (based on UU’s)1 Halo 22 Star Wars: Battlfrnt 23 Fable4 Counter-Strike5 Call of Duty 36 Battlefield 2: MC7 Call of Duty 28 Street Fighter Anniv.9 Rainbow Six 310 Splinter Cell Chaos