This tutorial will show you how to unjam buttons on controllers, remotes and etc. Today I shall demonstrate with and xbox 360 controller. This works better with plastic buttons and rubber ones take more work, but the end result is worth the half a minute this will take.
Tools:
*Controller with jammed button
*length of a straw 
*scissors or a knife
EDIT:No video sorry my phone software is being silly and unresponsive.

Step 1: Cut the straw

Slit the straw upwards like this

Step 2: Inserting the straw

Jam the straw between the button and the remotes housing and rotate the straw until it reaches its starting point.

Step 3: Test it

Spend hours mercilessly tapping your button, purely because you can!

Source:instructables