Other than bunch of useless applications that you can disable (see my previous post here), I found that you can also disable animations in your Android phone. I feel that this make your phone runs even faster!
[Update: 03 August 2014]: Apparently the latest 4.2 Android update has disabled "Developer options" but you still can enable it by going to "About device" and click on the "Build number" multiple times. Sounds cool definitely from a developer perspective!
- Go to Settings -> Developers Options
- Turn OFF all animations (i.e. Window animation scale, Transition animation scale and Animator duration scale). The default is scale X1, you just need to turn it off.
Hope it helps!