spent some time figuring out how I was gonna set this up because it's hard to make it sound like an anime. But here it goes.
A highly intelligent elementary schooler spends most of his time in his mother's basement conducting "science". Has a strange condition that causes his glasses to conform to his eyebrows. His greatest nemeses are his tall, overbearing elder sister and his mentally unstable trap rival. The show covers the short stories of his engineering attempts going horribly wrong and how he fixes them. He's also secretly a bit of a mecha enthusiast.
Shakugan no Shana, for the voices of Alastor and Marchosias. It was generally a very well-done dub.
Spice and Wolf has excellent English voice actors.