Season 5: The one with an identity crisis

Touted as the highest-rated run of all time, season five of Idol, though commendable in its discovery of Katharine McPhee (left) and Kellie Pickler (centre), suffered with something of an identity crisis. The Brittenum twins - Terrell and Derrell - were featured prominently throughout the auditions, but cut after being charged with forgery, theft by deception, and financial identity fraud after allegedly stealing another man's identity to buy a car.

Also suffering a Face Off type predicament in the season's final weeks, Bucky Covington made headlines for a ''bizarre incident'' in which he attempted to impersonate his twin brother, Rocky, in 1998 in order to help him avoid prosecution.