Cutting a bagel is dangerous business. According to the Wall Street Journal, in 2008 there were 1,979 bagel-related emergency room visits. This makes bagels the fifth most dangerous food (behind chicken, potatoes, apples, and onions). If you’re partial to your fingers, I suggest a bagel-cutting aid.
I’ve used a guillotine-style bagel cutter for a long time, but sometimes it doesn’t give the cleanest cut. A serrated knife does a better job, but the risk of accidents is high, especially when your bagel is the right kind (that is, shiny-slippery-firm, not squishy-soft-pudgy). The good people at BigKitchen sent me this Ironwood Acacia Bagel Miter, and I was anxious to see if it would cut it.