Most of the Xbox 360 system bundles come with a variety of accessories such as cables, headsets, and controllers, but you'll need to buy extra peripherals if you want to get other players on the system. Xbox 360 Core system owners can also pick up a few accessories to feel less inadequate about their machines.
You're going to need extra controllers if you want to invite friends over to play Madden or Halo. Go with first-party controllers manufactured by Microsoft. That guy who makes his friends play on shoddy third-party controllers is almost as bad as the dude who asks to borrow his friends' controllers and then never gives them back. The wired pads are less expensive than the wireless ones and you don't have to worry about running out of battery power in the middle of the game.
The Xbox 360 can support up to four controllers, but the system has only three USB ports. You could get a cheap USB hub to increase your port count, or you can use it as an excuse to go wireless. The wireless gamepads cost more than the wired versions, but the premium will be worth it the first time you chuck the controller and see that beautiful gamepad sailing unhindered through the air. Pick up the Xbox 360 Play & Charge Kit and rechargeable batteries to support your wireless habit.
Get the Xbox 360 Wireless Racing Wheel if you want to add more realism to your Forza or Project Gotham Racing experience. The wheel isn't completely wireless--you still have to wire the pedal set to the wheel and plug the unit into an electrical outlet for power--but it still connects to the console wirelessly.
Every online-capable Xbox 360 system comes with a single headset for voice chats and in-game communications. Pick up a few extras to get more players talking.
The Xbox 360 Wireless Headset gets rid of the short wire connecting the headset to the gamepad. It's a compact, single-ear unit that looks like a cell phone wireless headset. Halo fans can opt for a Limited Edition Halo 3 version that sports a green and gold paint job and a Halo 3 logo.
The camera accessory enables features such as video chat in Xbox Live and in-game video interaction in several Xbox Live Arcade games and a handful of Xbox 360 games. Even more important to some, the Vision lets you take your own pictures for personalized gamertag shots.
The Xbox 360 Messenger Kit might not be worthwhile if you only input text when entering a name in a new game, but for serious texters, the Kit's Xbox 360 Chatpad is next best thing to stowing a keyboard under the couch.
The 20GB drive was good enough when the Xbox 360 first launched, but that was before Xbox Live Marketplace started offering gigantic video downloads and the New Xbox Experience introduced support for full game installations. Upgrade to the 120GB hard drive if you're constantly deleting content to make room for the next video or game demo download.
You will need a memory unit or a hard disk to save games on the Xbox 360. It's not a must-have for most system owners that already have a hard disk installed, but it does come in handy if you want to take your Xbox Live profile with you to a friend's system.
The HD DVD Player adds HD DVD movie support to your Xbox 360. The drive can only play HD DVD video content, so don't expect to see any HD DVD Xbox 360 games. You'll have a difficult time finding the player in stores now that Blu-ray has won the next-gen format war.
The console has an Ethernet port for wired network connections, but who wants to run an RJ45 cable through the living room? Microsoft designed the Xbox 360 Wireless Networking Adapter to attach to the back of the console for a snug fit.
You can use the regular gamepad to navigate through the Xbox 360's media options, but sometimes you need the comfort of having a real remote in hand while viewing video content on the console.