Groovy trashy lo-fi slimy garage bands

[The Amphibious Man]

Old or new, I can't get enough of that sound but can't find much of it either. I'm talkin' crappy mic through a tiny guitar amp, terribly recorded, badass sound. New or old from the sonics to ty segall just throw me some good shit please!

[Tyler]

All this pretty much spot on. 
In terms 2000's stuff, i'll also add:

Fe Fi Fo Fums- shake all night 

Live fast die- Bandana Thrash Record 

Boys Club- s/t and all the 7's (like a poppier supercharger)

Time Flys- Energy and Wet Ones 7's. "Fly" Lp too.

Real Losers- music for funsters 

Radio Beats- Ready to shake

Chris said:

Try the first 2 Loli and the Chones singles (Weenie Choker Rock N Roll and Straitjacket Baby/Makeout Party) .... also the first, greatest Donnas album (The Donnas)... and Thee Tee Pees... All the Rip Off Records compilations too (Spoiled Brats etc) ... and of course the very first recordings by Jay Reatard under the name of The Reatards... Not to mention the mighty Supercharger / The Brentwoods and any other stuff made by the lo-fi genius Darin Raffaelli.