There's a package that can accelerate all the iOS animations if you've jailbroken your phone. It's quite a nicer experience and for me another reminder of why it's important to have a libre phone in the future.
I run a jailbroken iOS 6 phone, and have all my animations set to 2x speed. It's easy to forget how much faster that is until I use someone else's device (it's everything--home button, unlock, etc).
