revision preference src: Aniston also appeared in two more failed television comedy series, The Edge and Muddling Through, and guest-starred in Quantum Leap, Herman's Head, and Burke's Law. 19942004 <SEP> tgt: Aniston also appeared in the two failed television comedy series, The Edge and Muddling Through, and guest-starred in Quantum Leap, Herman's Head, and Burke's Law. 19942004: Friends and worldwide recognition Depressed over her four unsuccessful television shows, Aniston approached Warren Littlefield at a Los Angeles gas station asking for reassurance.