If you use Logitech's Unifying Receiver on Linux check out the open source 'Solaar' app. It makes it easier to pair and manage wireless keyboard and mice.
macOS enlarges the on-screen pointer when you shake your mouse, making it easier to locate the pointer on screen. Now you can get this feature on Ubuntu.
Ubuntu 13.04 sees a refined set of Mouse & Touchpad settings added, along with a interactive 'testing' area for double-checking your buttons, double-click speed and scroll wheel.
Canonical sell an Ubuntu-branded optical mouse in their online store - and i've can't decide whether or not to get one. My need? I can't stand the trackpad on my netbook. At all. It's small, overly responsive in places and not enough in others.
OS X Lion introduced natural/reverse scrolling where by "content tracks finger movement". If you've ever used a touchscreen smartphone you'll already be familiar with how this works: you drag down to scroll up; you drag up to scroll down. 'Natural Scrolling' by Charalampos brings reverse scrolling to Ubuntu.