most of the hip festivals are in the summer/fall
i know plenty of hip festivals on the eastern seaboard.
do you like jamband music?
http://www.jambase.com/ you can find any concert/festival
in any state if you like jam music
the only festival i know of in PA is the All Good Festival in june/july
if my memory serves....which it often doesnt but
anyway. that site is all you need.
if i ever get that ride out to state college,
perhaps i can line up some fungus for ya

i normally go to Gatheringofthevibes.com every year,
and probably since i moved back in the area,
the Philadelphia Folk Festival.
Do you like the Dead? if so, Ratdog is plaing in Philly at the Electric Factory
on Friday march 24 and the 25th
http://www.ratdog.org/tour/index.php
might be the last shows i catch untill move down to the Jersey shore
to work for the summer....but ill be there!