We often microwave it, finding that's quicket and retains more flavor than boiling. About two minutes an ear is about right in most microwaves. If you prefer the caramelized flavor from grilling, microwaving half as long and then grilling provides quicker results without as much risk of burning.
Then whatever you like on it. I've been using some flavored olive oils lately, which are pretty good, but it's hard to beat butter.
