This is my sort of question. Here are just a few.

Less Expensive to mid-range:
El Pelon (Fenway)
– Mexican

Penguin Pizza (Mission Hill)
– pizza, salads, etc.

Cambridge One (Fenway & Harvard Square)
– pizza, salads

Pho Lemongrass (Coolidge Corner)
– great soups

Audubon (Audubon Circle area – betweeen Kenmore Sq and St. Mary’s near Fenway)
– sandwiches and salads

Bukowski’s (Inman Sq and Boston near Back Bay)
– awesome beer collection

Eastern Standard (Kenmore Square)
– bistro

The Butcher Shop (South End)
– good wines, tasty meats and stuff

Pricier:
Oleana (near Inman Square)
– great flavors, Middle Eastern influences

EVOO (Inman Square)
– terrific and interesting combinations

Rialto (Harvard Square at the Charles Hotel)
– wonderful!

Fugakyu (Coolidge Corner)
– Japanese

Pricey Bakery/Pastries:
*Tatte Bakery (Beacon St. at St. Mary’s in Brookline)