Tim Allen is using the Shifting Gears season 2 premiere as a way to reunite with his Home Improvement - and Last Man Standing - costars. In Us Weekly's exclusive first look at the Wednesday, October 1, premiere, Allen, 72, is all smiles while with Patricia Richardson, Debbe Dunning and Richard Karn, whom he shared the screen with in Home Improvement. While details about Richardson, 74, Dunning, 59, and Karn, 69, have yet to be announced, ABC previously teased that their characters "show up to support" Matt (Allen) in "an unexpected way.