You know what sucks about the Xbox 360...the add-ons!! It's expensive, but great quality. That's the one criticism I have with the Xbox 360. But, anyway, I recommend the following accessories to add-on to your Xbox 360.

Controllers

This is a must add-on, just because you'll need it for multiplayer, head-to-head, and Xbox Live (Online Multiplayer). But the controllers don't come cheap. They cost between $39.99 - $54.99.

Hard Drives

The hard drives are the most expensive accessory, on the entire market out there. But it's an important accessory because you need that for memory storage, music, etc. They come in 20GB or 120GB. Obviously, they're not cheap. The downside to this is that it's heavy and hard to bring to your friends house (example). They're price range between $129.99 - $199.99.

HDMI Cable

HDMI Cable's are sort of optional, since it's better used on 1920 x 1080 resolution televisions. HDMI Cable's will upgrade your Xbox 360 picture from 720 to 1080. That's really good, because you'll see every single detail of the game. HDMI Cable's come pretty cheap. But, be sure you have a 1080 TV first. The price range between the HDMI Cable is from $34.99 - $49.99

Intercooler

Are you worried that your Xbox 360 might get overheated? Did you try your fans, but they're were too bigger? Well, there's a solution. The Xbox 360 Intercooler. It is attachable and is guranteed to cool down your Xbox 360 when your playing. The cost won't hurt you that much either. They cost around $29.99 - $39.99.

Steering Wheel

If your a racing fanatic, well then the steering wheel bundle will take your racing to a whole new level. With the HDMI Cable, you'll have full effect with your racing experiences. Just plug and play. The navigational buttons are intergrated on to the steering wheel. Including in the bundle is the gas and brake pedals. These will make your racing experience into a new dimensioin. But, be prepared, because the price isn't "good". The price range is between $59.99 - $79.99.

DVD/Universal Remote

Parent's, are you having a hard time "finding" your remotes. The DVD, the TV, the Satelite, etc. Well, Microsoft has a new invention. The DVD/Universal Remote. The universal remote will put your dvd, tv, satelite remotes all in one. Plus the fact that it will help you in the Xbox 360, while your watching your DVD's. I recommend buying this product. But the price range might throw you off a little bit. The price goes from $39.99 - $49.99.

See Also:
Xbox Accessories
PlayStation 3 Accessories
Xbox 360 System Information
Accessory Kit