Some of my favs within Huntington Village:
Abel Conklin's (steakhouse)
Restaurant Joanina (italian, but they also have a gourmet deli attached that serves breakfast, lunch and dinner.)
Canterbury Ales (pub/casual, very friendly staff, consistently good food which I consider better than typical pub fare.)
Munday's (family oriented, best known for their breakfast, but can get very crowded on weekend mornings)
Tomo Hibachi (http://www.tomohibachi.com/menu/index.html - broken link) (sushi/japanese...Samarai, which Andy mentioned, is Tomo's sister restaurant. Samarai is more for larger parties as it doesn't have many small tables like Tomo.)
Piccolo (romantic)
Prime (best in warmer months so you can take advantage of the outdoor seating area overlooking Huntington Harbor.)
Huntington, but not the village:
The Clubhouse (very intimate steakhouse, closer to Woodbury and Melville)
Other restaurants in/near the Huntington:
Ruvo in Greenlawn (italian)
Mill Pond House (http://www.millpondrestaurant.com/main/index.php - broken link) in Centerport (steakhouse/seafood, excellent food and service. Great for lunch and very popular during the summer months when they open their outside deck/bar.)
Sweet Mama's in Northport (very family oriented, good comfort food, popular breakfast spot)
Can you tell I don't cook?
There is no shortage of good restaurants in the Huntington area!!