I had the lunch buffet at Chola in Greenwich a few weeks ago. It was different in that it was served at the table, 5 or 6 different dishes in small metal (copper?) containers with rice in the middle, but the food was excellent. You can order it as a vegetarian buffet for $8 or with meat for $10, and they'll bring you more of whatever you want. Kind of a civilized buffet. The Tandoori chicken was unusual as they do not use food coloring so it comes out yellow instead of red. They're on iDine, so you can get an extra 20% off if you have that.
Only downside: the damn meters in the crowded parking lot at lunchtime! But if you go on Saturday, the meters are not in effect after noon (a friend tells me they did that because everyone used to be at the club on Saturday afternoon in Greenwich). They do lunch on Sunday as well.