This will allow you to make any of the creatures you can summon fly after they die.

You need Wabbajack, a summoned Creature, a high defence rating, and an open Field.

I recommend you use the ice atronach or storm atronach. Summon your creature while wabbajack is equipped and wait until the creatures summon time is almost expired (if you used an ice atronach as I recommended, this should take around twenty eight seconds) and shoot wabbajack at it when there are two seconds left (you don't want to be point blank when you pull this stunt).

If you do it properly, you will see the animation of the creature dying while red spell circles cover it. Once the circles dissapear the creature should transform into any number of enemies or deer. Try not to kill the creature, or your game may freeze.

Once wabbajack times out you should have your original creature return to existence as a floating statue, this statue will float aroung meaninglessly for a very long time. When it contacts an obstacle it will either pass through or over, if it contacts a wall it will phase through.

This glitch also works with Sanguine Rose or the Staff of Corruption as the means for summoning.