Denver really punches above it's weight for a city of it's size, it's got a great food scene. I'll give you the list of places I've been to that are great that are all basically downtown, and where I've heard they're great. It's a long list, let me know if you have questions (I've ignored potential value of a place, since work has paid for nearly all of these meals).

Places I've eaten at that I'd reccommend:

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• Euclid Hall (Larimer Square; fancy/delicious bar food)
  
• Osteria Marco (Larimer Square; Italian)
  
• The Kitchen (Downtown; New American)
  
• Duo (The Highlands; New American)
  
• Cholon Asian Bistro (Downtown; Fusion)
  
• Mercantile (Union Station; New American)
  
• Uncle (The Highlands; legit, but overpriced Ramen)
  
• Non-dinner
  
• -Masterpiece Deli (The Highlands)
  
• -Backcountry Deli (Downtown)
  
• -Snooze (Union Station; breakfast foods)
  

Places I've heard good things about:

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• Linger (Highlands; ethnic)
  
• Root Down (Highlands; New American)
  
• Fruition (Highlands?; New American)
  
• Hops and Pie (Berkely/Highlands; Great Pizza)
  

Ignore the Yelp! rating

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• The Squeaky Bean
  
• Jimmy's Urban Bar and Grill