I got one piece of "wisdom" to add to what no doubt everyone else already knows about how to pour a beer:
If the glass is wet (i.e. just rinsed), there are less nucleation sites for bubbles to form around, so you get less of a head-explosion. I always run cold water around the inside of a glass before a pour (if it's not still wet from the previous beer... a good excuse to never let your glass dry out eh
)
