Here's Part I of the Flight of the Bumblebee. Completely alternate-picked, of course (except for the two trills). This transcription is based off of the video at Chops from Hell
played by Marcos de Ros, with a few minor changes. I like his version because unlike most others, it doesn't involve rolls, which I detest and I think slow me down. Instead, it involves a lot of single-string playing, with appropriate jumps, so that it doubles as an etude for high-speed position shifts and single-string playing. The result is a cool, impressive, and challenging piece that every shredder or classical guitarist should know.