I just love spaghetti and meatballs.  It's my favorite Italian dish.
It's a great innovation by early 20th century Italian immigrants! Do you like any other similar dishes?
I really like all white sauced pasta. 
Nice! "pasta seduta" and "maccaroni azzese" are two other very similar dishes to spaghetti.
Is macaroni and cheese considered an Italian dish?
Italian because, in Italy, meatballs are smaller and only served with egg-based baked pasta.
However, various kinds of pasta with meat are part of the culinary tradition of the Abruzzo, Apulia, Sicily, and other parts of southern Italy. A recipe for rigatoni with meatballs is in "Il cucchiaio d'argento" ("The Silver Spoon"), a comprehensive Italian cookbook known as the "bible" of Italian cooking. 
In fact, in Abruzzo, chitarra alla teramana, is a long spaghetti-
like pasta served with small meatballs (polpettine). It is traditional made-in-Abruzzo recipe. It is a generally a first course (primo piatto) prepared with chitarra pasta cut with a traditional tool called “chitarra” or guitar-like strings tool. They are seasoned with meat or vegetable ragù and served with pallottine (little balls, which are actually meatballs).
Other dishes that have similarities to spaghetti and meatballs include "pasta seduta" 'seated pasta' and "maccaroni azzese" in Apulia.