Oh, yes! I've been a stay-at-home mom for 10+ years now and homeschooled my children up until last year, all the while working a part-time job from home. I wanted to pull my hair out when someone asked me what I did all day (said in the tone of voice that suggested many bon-bons and soaps).
Send Jeff another e-mail. Personally, I'd forward my last e-mail with a very brief intro saying, "I'm resending this email from xx/xx/09 because I have yet to receive a response. Would you kindly send me the Cappuccino I ordered" (or whatever it is you need him to do). I think the short e-mails probably get a faster response because he can easily figure out what you need.