Yeah, rig-wiggle is my new pet peeve after watching a lot of students reels this year.
Sometimes they speed up the footage so fast (because their professor said to keep it under a minute) that all you see is wild, gyrating camera moves, and you can't even see the control moving!
Similar to Juan's reel, here is a creme-de-la-creme reel that DOES sort of wiggle the controls. Josh Carey's Loony Tunes reel: https://www.youtube.com/watch?v=LLWpKxDSVhk
But again, Josh pre-animates the wiggling in a way that is designed to show off the rig in the best possible way. It isn't a screen-capture of wiggling boring FK controls one-at-a-time. It is a well-designed animation that shows the range and appeal of the rig. And the camera isn't exploding everywhere.
If you pre-animate your rig, you can show more poses in less time, without having to speed up the footage. You show nicer work, and your reel stays short.
https://vimeo.com/38257543 Cenk is also a great reel. It has a lot of wiggling, but notice 2 things. It is well-edited. There are pre-animated camera transitions, and when wiggling, the camera stays still. The wiggling is showing off the range of control the face poses have. It isn't wiggling every single control.