I had to get 'Ralph' jumped back in November (had left the map light on overnight). When I realized the battery was dead I called the Prius hotline to get someone to come and give it a boost--but Toyota had a pretty difficult time getting anyone to come.
Whenever they told a mechanic it was a Prius, the response was be 'Sorry, I don't touch those.' All the mechanics were afraid of getting electrocuted by the funky weird car.
Finally, (several hours later), they found a guy who agreed to come out. Turns out he'd never heard of a Prius before--had no idea it was a hybrid. And, for that reason alone, he was perfectly happy to jump it just like any other car. (As any mechanic should have been!) The placement of the battery in the back didn't really phase him--but he did seem a bit startled when we said 'OK, he's good to go' and he hadn't heard an engine reving ;-)
Ralph started up just fine and hasn't given us any trouble since...