Gary Oldman could do it and that's without cutting off his legs. That guy is amazing! Saw him play a dwarf in some film. Full views and all. Took me 3/4s of the film to finally realize which character he was playing. Still have no idea how it was done. Good film too.
It's called Tiptoes and it's "Gary Oldman, in the performance of a lifetime." Also starring Kate Beckinsale and Matthew McConaughey.
And it's not a good film, but it is borderline Epic on the amazing scale. There should be some evidence on here somewhere of me blindly sending out DVD copies to about a dozen friends one weekend. Hilarity ensues.
Your storyline:
Two brothers - a dwarf (Rolfe) and one normal-sized (Steve). When Steve's girlfriend Carol becomes pregnant, the pair are fearful that the baby will inherit the dwarfism gene. Matters are complicated still further when she finds herself falling in love with Rolfe.
My favorite quote of the movie: (Kate Beckinsale to Matthew McConaughy) "So you had a circle jerk with a bunch of little people? I would love to see that!"
A couple years later Tosh.0 did one of his Spoiler Alert segments on it:
editedUncutBottomline - good date movie, if you know the girl really, really well and she wouldn't be appalled by Smackie.