heavy rotation:

these are the top 25 songs currently in heavy rotation in my hard rock/metal playlists (= mp3's/cd/satelite radio/internet radio):

1 - Killswitch Engage - The End Of Heartache
2- Tool - Undertow
3 - Ill Nino - This Time's For Real
4 - Psyopus - Death, I
5 - Candiria - Mathmatics

side note - #'s 4&5 are extremely technical songs with intricate guitarwork & time signatures with no rhyme or reason to beat changes, the bands are as tight as i have ever heard. even if you don't like this genre of music, these two are worth a listen simply for the sheer musical genius/talent that shines through.

6 - Atreyu - Bleeding Mascara ...(one of my favorite bands, this song kicks!)
7 - Down - Lifer .... (Down = side project of Pantera, Crowbar, et. al.)
8 - Puya - Fundamental ...(great band from Puerto Rico, this jam has a great salsa/jazz flavor)
9 - Trivium - A Gunshot To The Head Of Trepidation
10 - Sevendust - Gone
11 - Faith No More - Suprise! You're Dead!
12 - Korn - Fake
13 - Finger 11 - Quicksand
14 - Type O Negative - How Could She
15 - Machine Head - Imperium
16 - Tool - Stinkfist
17 - Strapping Young Lad - Love?
18 - Refused - New Noise
19 - Killswitch Engage - When Darkness Falls
20 - Section 8 - De Omega ...(probably not findable, local band from Saratoga, NY)
21 - Avenged Sevenfold - Unholy Confession
22 - Taproot - Comeback
23 - Nonpoint - Mindtrip
24 - Deftones - Root
25 - Soilwork - If Possible

Honorable Mention:

Deftones - Headup
Daysend - The Blood Of Angels
Norma Jean - Liarsenic
Third Eye Machine - Rumkert

my list could obviously go on. unfortunately, i need to cut it off somewhere...