Play Angry Chicken and then buff it with Shattered Sun cleric. Ping your chicken and watch your opponent concede in complete awe as you dominated him with an insane combo.
For the record, that train of thought almost never happens. When Enrage minions get a chance to do their thing, they're really powerful but with the exception of the Gurubashi Berserker, it's extremely rare for an enrage minion to survive past the turn being played. When I see a Mage coin out an Amani Berserker, I know what's coming so I will kill it instantly if I can. Barring that I'll drop something that has to be dealt with of my own so he doesn't get the 5 attack punch to my face.
But like Gavinrad suggests, they're good low level constructed combos that can win games. At higher levels of play, you're increasingly unlikely to get that combo off since you'll be facing smarter players with decks designed to prevent that very scenario from occurring.