Sometimes, a role has a habit of defining your career in ways that you don't expect it to. Jonathan Lipnicki was the star of 'Stuart Little,' and it turned out to be a case of little by name, and little by nature. He's much older now than he was when he broke out onto the big screen as a child actor, but he hasn't grown much taller. He's 5 foot 7. He's not the smallest man on our list, but he's noticeably shorter than most men around him.
Lipnicki was able to carry his child-star fame forward for a little while - he got 'Stuart Little' off the back of being Renee Zellweger's son in the classic 'Jerry Maguire' - but in recent years he's not been able to get himself on level pegging with the majority of his former co-stars. He still gets work semi-regularly, but you're more likely to see him in minor roles on television than you are in the latest Hollywood blockbuster.