Tim Allen, a stand-up comedian, had barely any acting credits to his name when he stepped into the role of man's man TV host ...

Tim Allen, best known at the time for his stand-up comedy, starred as Tim Taylor, the tool- and car-obsessed husband to Jill (Patricia Richardson) and father to Brad (Zachery Ty Bryan ... of man's man ...

You may remember Taran Noah Smith as the sweet little Mark, the youngest of the Taylor crew on Home Improvement. Throughout ...

According to Taran Noah Smith, the decision to change his character's look was made in the break between seasons 6 and 7.