If you aren't planning on using the RT-N16's USB ports to connect external drives, or if there's one free anyway, you might consider hooking up a printer, which can then be shared over your network. Also useful is what Asus calls EzQoS. Aside from forgetting that a 'Z' is pronounced "zed," this purports to make setting up Quality of Service rules on the RT-N16 a breeze, ensuring that you can continue gaming and browsing the web unhindered, even with P2P downloads running in the background.
The RT-M16's party piece is the way these functions are exposed in its user interface. Where other routers may resort to cryptic names and even more confusingly arranged menu structures, the RT-N16's UI is impressively simplified, without being patronising. Plus, if you do want more control, the Advanced Setting menu allows for it.
Proving its name is more than just marketing hyperbole, EzQoS really does make QoS configuration simple. A progress bar-like indicator shows how much bandwidth is available to P2P transfers, which is then eaten away at with click on icons marked "Gaming Blaster," "Internet Application," "AiDisk," and "Voip/Video Streaming." Obviously if you enable all of these options P2P transfer speeds will suffer, but if winning a heated match in Modern Warfare 2, streaming a film to your PS3, browsing TrustedReviews, sharing files on your RT-N16 and downloading the latest Debian build are equally important to you, it's achievable without any task suffering too badly. At least in theory.
This ability to prioritise traffic is hardly exclusive to the RT-N16, of course, but I've never seen QoS so easily exposed in a UI before. Other basic, but oft needed, functions, such as setting your wireless SSID, or encrypting the connection (and adding a password) are similarly simple to tweak. The RT-N16 is definitely the easiest to use router I've ever come across.
The simple user interface of the RT-N16 wireless router might put off a few users that find it patronising but they're missing out. All the functions you're likely to need, and more, are easy to control and if you need to get to them, more advanced options aren't hard to find. Products like this should 'just work' and that's what the RT-N16 does.