Place whole ears of corn in an ice chest. Pour beer over top. Dump ice out over the ears of corn. Place the lid on the cooler, and let sit 8 hours, or overnight.
Preheat smoker to 250 degrees F ( 120 degrees C).
Place corn in the smoker and close the lid. Cook for 1 to 2 hours, turning every 20 minutes or so. Kernels should give easily under pressure when done. To eat, just peel back the husks and use them for a handle.