The idea of one of the characters running around with a Sheppard Summoning Contract is pretty funny, actually - especially with the temporary duration thing, and the idea that it might be able to summon different Sheppards, and the fact that no matter what happens to Sheppard while s/he is there, all wounds and such are healed when s/he gets booted back to home reality.
"What the hell was *in* that stuff?"
"What the hell was *in* that stuff?"