Here's a video of a young Brazilian man demonstrating justified pride and palpable pleasure as he puts his homebrew excavator, powered by syringe hydraulics, through its paces. Here's an Instructables post that takes you through building an ambitious syringe-hydraulics robot — full of good ideas for your own syringe hydraulic projects.
Boy Makes DIY Excavator with Syringe Hydraulics
(via Geekologie)