"Godspell was a good leap for me, it was a good shop window"

Jeremy Irons is referring to his experience carrying out in the musical Godspell. He is suggesting that the musical was a great opportunity for him to showcase his skill and gain acknowledgment. He is implying that the musical was a fantastic platform for him to demonstrate his capabilities as an actor and vocalist. He is likewise recommending that the musical was an excellent method to get his name out there and get more exposure. By performing in Godspell, he was able to get more attention and recognition from the public. He is recommending that the musical was a fantastic method to get his name out there and gain more direct exposure. He is suggesting that the musical was a terrific shop window for him to flaunt his talent and gain more recognition.