Saying that Elijah Wood is a little on the short side runs the risk of stating the obvious. You don't get cast as Frodo in 'Lord of the Rings' if you're a giant. In the world of J.R.R. Tolkien's fantasy novels, hobbits are almost dwarfs, and so a smaller man is required to play one convincingly on screen. That made Wood the ideal choice, at the height of only 5 foot 6.
Both Wood and Daniel Radcliffe have frequently complained that they're mistaken for each other by people in the street. That must be particularly upsetting for Wood, who's an inch taller. When you're this short, every inch matters! Perhaps Wood's biggest achievement in acting was convincingly playing a soccer hooligan in 'Green Street' - we suspect he might have been wearing lifts in his shoes for that, or else he wouldn't have been able to intimidate anyone!