A quick youtube search of their name will get you dozens of vids of their comic busking. But I prefer the official high quality videos. Honeybee (not surprisingly sweet) and Automaton-ic Electronic Harmonics (nicely robot-y). Honeybee in particular reminds me of the delicious clockwork version of Close To You(Why Do Birds Suddenly Appear?) from the movie, Mirrormask. Included below for your own comparison/enjoyment.
Honeybee.
Automatonic Electronic Harmonics.
official Steam Powered Giraffe web site
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From the movie MirrorMask
Mirrormask was written by Neil Gaiman, effects from the Jim Henson Company. If you haven’t seen this movie yet… poor baby.