I'm teetering between a 3 and 4...but I choose a 4 and I'll tell you why in a second.
I came with friends a few Sundays ago and I fell in love with this type of buffet-I generally equate buffets with Golden Corral and run the other way. For a newbie to Indian food, its great to be able to try a little bit of everything. If you love food that uses a variety of spices in unusual combinations (not necessarily spicy as in hot), Bombay Grille provides a nice introduction to Indian food.
The buffet is small-ish and usually has several chicken dishes-butter chicken, curried chicken, and chicken vindaloo among others. The sauces are out-of-this-world delicious and even the paneer (Indian tofu) has a bouncy texture. The buffet includes fresh naan brought to your table, which you can dip in the delicious sauces from the entrees. They have a strange looking dish that is chopped spinach, mint, and chickpeas-looks like baby poo but tastes delicious!
The reason that this place deserves 4 stars is the mango custard desert. It is creamy. delicious, and helps cool off my over-spiced American palate after a spicy meal. I would bathe in this stuff if I could!!! Be sure to save room for dessert.
Tip: The Sunday buffet is more expensive ($12), so try it during the week if you're budget-conscious.