Top Chef is a television reality competition show. It is shown on Bravo Television on cable. The first season was hosted by Katie Lee Joel. Other seasons were hosted by Padma Lakshmi. Tom Colicchio is the head judge. Every episode, they invite a 'guest judge' to come and help judge the dishes with Padma Lakshmi (or Gail Simmons, when Padma cannot be there) and Tom Colicchio. Gail Simmons is a judge. Tim Allen was a judge. Some past guest judges are: Anthony Bourdain, Rocco DiSpirito, and many others.