I actually prefer to sterilize my bottles in the oven. Put clean bottles in a cold oven, each covered with a small piece of foil. Crank it up to 350*, when it hits that, set the time for 1 hour. when the timer goes off, turn the oven off and let them cool back down. For me, it's less of a pain than dunking 50 bottles in sanitizer, plus the bottles end up sterilized rather than just sanitized which provides that extra piece of mind.
This method does take longer though. I usually start this on Saturday night and bottle Sunday morning (takes about 1-2 hours for the bottles to cool). Since I prefer debauchery to church, this schedule works for me, though.