Children presenting for ear tube surgery (bilateral myringotomy and ventilating tube insertion) often suffer from postoperative delirium in the recovery room. It has been hypothesized this may be a result or side effect of a premedication, midazolam. Midazolam is frequently administered to children preoperatively as a means of decreasing separation anxiety. An alternative medication, dexmedetomidine, is sometimes used as an alternative to midazolam and has also been effective in treating postoperative delirium. In this study the investigators would like to see if there is in fact a measurable difference between children receiving the standard midazolam or dexmedetomidine.