Related Clues:

• One concerned with trivial points of detail
• Steve Urkel, famously
• Niche enthusiast
• Person who might do the Vulcan salute
• Desperate chap bitten by dog perhaps a former teacher
• Many a sci-fi fan, stereotypically
• Big-time enthusiast
• Stereotypical D&D fan
• "Adorkable" sort, perhaps
• Well-educated showoff
• Steve Urkel, e.g
• One's obsessed with tiny details
• Pebble-shaped piece of candy
• Pebblelike candy
• One with deep knowledge of a subject