Looking for an After Effects feature in Blender (Expressions)? In after effects there is a feature where you can write a quick code to automatically animate something. i.e. say you want something to slightly "wiggle" you can type wiggle (2,30) and it will automatically wiggle when moving the timeline.

Or say I want something to scale in and out automatically, In AE I can just type time*10 and it will automatically scale in and out with the timeline. 

Is there anything like this for Blender?
Not that extensive. In the grapheditor you can use modifiers for your animations, like noise, which makes it the selected line(s) of keyframes wiggle. It's very limited.

It would make a good addon tho....