OK, it's about time ... heavy/psych rock megapost!
First, a repost of something that expired a while back:
The Ganjas - The GanjasSwirly, fuzzy, laid back psychedelic rock from Chile. Super groovy and highly recommended. It's a shining example of its genre and I often find myself playing it for people who wouldn't normally listen to it because it's more widely accessible than a lot of the other retro psych-rock stuff it resembles (Dead Meadow, Moccasin, etc.)
http://www.mediafire.com/download.php?xkmmxhmvvwm
Giant Squid - The IcthyologistVery eclectic stuff, theoretically falls under "post-metal" but covers a wider range than that musically. Epic shit. Giant Squid is an extremely interesting and cool band and totally worth your time.
http://www.mediafire.com/download.php?ozniyjgxmtf
Under Brooklyn Palms - GestruppgestrauchSome of this is straightforward heavy psych in the vein of Kyuss, Causa Sui, Colour Haze, etc. Some of it is a bit more off the beaten path ("Tiredness" in particular is really sweet and not stoner rock at all, kinda flamenco-y even). I keep coming back to this album, I've had it for a couple years and I've rediscovered it a few times, I figure it's about time to share. I really like it.
http://www.mediafire.com/download.php?nyzymlgzmnd
Ten East - Extraterrestrial HighwayTen East is an instrumental project by a bunch of guys from the Palm Desert scene, including a couple ex-Kyuss guys. Brant Bjork is on this album, as is Mario Lalli from Fatso Jetson and Yawning Man, and on a different album by them that I don't have (The Robot's Guide To Freedom), Scott Reeder and Greg Ginn(!) also played. It's sweet stuff.
http://www.mediafire.com/download.php?y0oygwuguyt
YOB - The Great CessationThe return of the doom metal behemoth YOB is everything it should be: crushingly, mindnumbingly, heavy and hideously, souldrainingly dark. If you enjoy doom metal, this is top fucking quality. If you don't, this will probably not be listenable to you.
http://www.mediafire.com/download.php?wkijjiyebem
The Assemble Head in Sunburst Sound - EkranoplanThis is pretty straightforward retro heavy psych rock. If you like Dead Meadow, Comets on Fire, Colour Haze, the Ganjas album above, etc., this is solid stuff. Echo-y vocals and sweet riffs and pretty awesome songwriting and musicianship make this an easy pick.
http://www.mediafire.com/download.php?ndenrznhydy
Sula Bassana - The NightThis album's pretty spacey stuff. Think Hawkwind, krautrock, that kind of thing. It's all instrumental and there are a lot of synths in addition to the rock band skeleton. It's really interesting, I just found this album and I'm starting to get really into it.
http://www.mediafire.com/download.php?qtdzzm53zma