There are only two transitions you’ll ever need: a cut and a dissolve. Your video editing program comes with all sorts of them, from star wipes, to page peels, to cube spins, but you can spend your entire life as an editor only using cuts and dissolves; most pros tend to look down on anything fancier as intrusive and tacky. But that doesn’t mean that there aren’t circumstances where the unusual, or even the outrageous, is called for.