http://nationalatlas.gov/printable/images/pdf/congdist/pagecgd109_pa3.pdf
Check out PA #12. (It's irregular mate supports a 'Pub)
Rostenkowski's was similar in 1994.
It was created that way (by the Republicans in the PA legislature) in order to shore up the next-door 18th District for Republicans.
The gerrymander will probably be the ONLY thing that saves Jackass Murtha this time around, assuming he even wins re-election. The 12th District prior to 2002 was far less Democratic than this one - G.W. Bush won the old 12th in 2000 and only narrowly lost the new 12th in 2004. Under the old lines, Kerry wouldn't have come close.