I'll give props to Rise Against like a few others here have. Appeal to Reason really is a sweet album so that usually finds its way on to my playlist. I keep some other various punk like greenday, AFI, Anti-Flag, maybe some screamo works its way in the mix, too.
Mellow park laps I usually change it up and go a bit more mellow. raw delta blues or doo-wop I got a 3-CD set of rockabilly/doowop various artists but for blues I like RL Burnside, Robert Johnson, etc.
Some classics are always in the rotation:
Iron Maiden - Number of the Beast
Metallica - Master of Puppets or ...And Justice For All
Guns n Roses - Appetite for Destruction
Dio - Holy Diver
Lately I've been listening to some more metal like whatever I can find but I really like the scandinavian folk metal like Wintersun, Ensiferum, Finntroll, etc. So many layers of sound there, and some good acoustic bits to change up the pace. I think Ensiferum's 2001 album definitely makes the rotation this winter.
Repping the world's smallest mountains...
2013-2014 snow days: XXXⅠV
Mt. Brighton - XⅠ
Mt. Tolle - Ⅲ
Mt. Holly - Ⅲ
Pine Knob - ⅠⅠ
Hawk Island - ⅠⅠ
Crystal Mountain - Ⅱ
Treetops - Ⅱ
Alpine Valley - Ⅱ
Caberfae Peaks - Ⅱ
Urban - Ⅰ
Slackcountry - Ⅰ
Boyne Mountain - Ⅰ
Sugar Mountain, NC - Ⅰ
Beech Mountain, NC - Ⅰ