Freak out that Maurice LeMarche had emailed me, check to see if it was a prank, and proceed to email him back requesting that he email my friend who's much more of a fan than I am. (Maurice LaMarche is the voice of Kif, Morbo, and the vomiting whale from Futurama).
Other options are Billy West (Fry, the Professor, and Zap Brannigan) and Tress McNeil (Mom and the Crazy Cat Lady from the Simpsons).
I'm not much on anime actors, but Futurama has got me cold. When I cosplayed as Armor!Alphonse in 2006, Vic saw me and requested a picture with me. I couldn't believe it. It was like the ultimate compliment for my very first true cosplay attempt.
WWYD if you were requested to do an undercover spy operation that might involve assassination but would for sure end up with world peace (on a political scale at least) but you couldn't see or talk to your friends or family ever again?