Neil Cicierega has a number of "Mouth..." albums, each more deranged than the last. Mouth Silence, Mouth Sounds, Mouth Moods, Mouth Dreams. The opening to Mouth Dreams haunts my nightmares.
Highly recommended.
SoundCloud is my preferred source: https://soundcloud.com/neilcic. There are also some one-off tracks that don't show up on the "Mouth..." albums, like "Bustin" and "Dear Dinosaur".
