| It could have been a recipe for disaster: The eleven remaining American Idol contestants covering songs from British Invasion bands including Gerry & The Pacemakers, the Kinks and the Zombies, all under the expert guidance of Herman’s Hermits singer Peter Noone and Invasion-era singer Lulu. Miraculously, the kids put on their game faces for last night’s episode, and achieved their most favorable ratio of competent-to-crappy so far this season. For instance, the heretofore milque |