Related Clues:

• Fanaticism
• Current craze
• Enthusiasm, and then some
• Hyperactive excitement
• Hot fad
• Crosswords in the 1920s, e.g.
• Beatles craze, e.g.
• Current rage
• Sale day feeling
• The Beatles produced it
• Way up state?
• Wild enthusiasm
• Obsessive enthusiasm
• Suffix with "Beatle" or "Wrestle"
• More than a passing interest