Raja Rani's lunch buffet is, well, decent. It's greasy, well-stocked, and reasonbly priced. But the food isn't that good. I'm pretty sure they don't use fresh vegetables, since the carrots and peas are often soggy, which suggests a frozen past.
If you go for dinner, they give you free pakora with your meal. However, they're a bit more expensive than other Indian restaurants in the area (i.e. Madras Masala), and the food just isn't as good.