Just felt like making a thread to discuss on the few bands out there in which 1(or 2) person/people play all the standard instruments(guitars, bass, drums).
Only 3 bands come to mind:

Bathory: Formed by 1 guy, who died recently. Very early black metal(hard stuff), but later on he did some much more appealable(depending on your point of view) style of music(viking metal).

Probot: A metal band formed by David Grohl(drummer from Nirvana, vocalist in Foo Fighters). Although the band's music isn't incredible, it's quite a feat to produce an entire album single-handedly.

Arsis: A 2-man death metal band from Virginia which hogged the spotlight on my last week's "band of the week" sig. 1 guy plays both guitars, sings, and plays bass whilst the other plays drums. The reason why I mention these guys is that it's impossible to picture it as just 2 individuals after listening to the complexity in their songs.

Those are the only 1(or 2)-man bands I know. What other bands like these do you know? Please don't come up with some DJ, MC, plain old singer, rapper, etc... I'm talking about 1 guy doing all the instruments apart from singing.